1. N. Ullah, Benzo[d]imidazole derivatives of piperidines and piperazine, Patent # US 8901304, Granted in December 2014.

2. N. Ullah, Dihydroquinone Derivatives of piperidines and piperazine, Patent # US 8916704, Granted in December 2014. 

3. N. Ullah, Dihydroquinone Derivatives of piperidines and piperazine, Patent # US 9073900, Granted in July 2015.

4. N. Ullah, 6-Piperazinyl-3,4-dihydroquinazoline-2(1H)-ones, Patent # US 9145388, Granted in September 2015.

5. N. Ullah, 6-Piperazinyl-3,4-dihydroquinazoline-2(1H)-ones, Patent # US 9199969, Granted in December 2015.

6. N. Ullah, 6-Piperazinyl-3,4-dihydroquinazoline-2(1H)-ones, Patent # US 9205087, Granted in December 2015.

7. M. Mansha, Y. Abbas, N. Ullah, Synthesis of (S)-2-acetamido-3-(4-hydroxy-3-(3-methylbut-2-enyl) phenyl) propanoic acid derivatives, Patent # US 9688611, Granted in June 2017.

8. M. Mansha, Y. Abbas, N. Ullah, Uncatalyzed sigmatropic rearrangement of tyrosine-based compounds, Patent # US 10023527, Granted in July 2018.

9. M. Mansha, Y. Abbas, N. Ullah, Method for making a prenyl group-substituted tyrosine compound, Patent # US 10329245, Granted in June 2019.

10. N. Ullah, M. Mansha, M. Sohail, Copolymers for iodide detection and methods thereof, Patent # US 10533079, Granted in January 2020.

11. N. Ullah, M. Mansha, I. Khan, A. Qurashi, Copolymer, a method of synthesizing thereof, and a method for producing hydrogen gas, Patent # US 10844165, Granted in Nov. 2020.

12. N. Ullah, M. Mansha, I. Khan, M. Sohail, A. Qurashi, Copolymer for photoelectrochemical water splitting, Patent # US 10882948, Granted in January 2021.

13. R. A. Kalgaonkar, K. Alnoaimi, N. Baqader, N. Ullah, M. Mansha, Methods and compositions of using viscoelastic surfactants as diversion agents,  Patent # US 11203712, Granted in Dec. 2021.

14.  R. A. Kalgaonkar, K. Alnoaimi, N. Baqader, N. Ullah, M. Mansha, Methods and compositions using a combination of zwitterionic surfactants and gemini surfactants as diversion agents,  Patent # US 11236264, Granted in Feb. 2022.

15. N. Ullah, A. Waheed, M. Mansha, I.W. Kazi, Crosslinked resin, synthesis thereof, and use for removing organic dyes, Patent # US 11351520, Granted in June 2022

16. N. Ullah, A. Waheed, M. Mansha, I.W. Kazi, Method for removing a pollutant from aqueous solution with a crosslinked polymer. Patent # US 11618006, Granted in April 2023.

17. R. A. Kalgaonkar, M. A. Bataweel, E. Alali, N. Ullah, M. Mansha, Methods and compositions mof using viscoelastic surfactants as diversion agents. Patent # US 11643590, Granted in May 2023

18. R. A. Kalgaonkar, E. Alali, M. A. Bataweel, N. Ullah, M. Mansha, Treatment of subterranean formations. Patent # US 11685855, Granted in June 2023

19. M. Ashraf, M. N. Tahir, N. Ullah, S. S. Shah, I. Khan, Nanocomposite supercapacitors and method of preparation thereof. Patent # US 11688564, Granted in June 2023

20. R. A. Kalgaonkar, E. Alali, M. A. Bataweel, N. Ullah, M. Mansha, Piperazine-based viscoelastic surfactants for hydraulic fracturing applications. Patent # US 11713412, Granted in Aug. 2023

21. R. A. Kalgaonkar, M. A. Bataweel, E. Alali, N. Ullah, M. Mansha, Methods and compositions of piperazine-based viscoelastic surfactants as diversion agents. Patent # US 11739255, Granted in Aug. 2023

22. R. A. Kalgaonkar, E. Alali, M. A. Bataweel, N. Ullah, M. Mansha, Fracturing fluids based on viscoelastic surfactants. Patent # US 11746279, Granted in Sep. 2023.

23. M. Ashraf, M. N. Tahir, N. Ullah, S. S. Shah, I. Khan, Energy storage device and supercapacitor. Patent # US 11887782, Granted in Jan 2024.

24. R. A. Kalgaonkar, M. A. Bataweel, N. O. Baqader, N. Ullah, M. Mansha, Methods and materials for wellbore fluid diversion using viscoelastic surfactants. Patent # US 11959017, Granted in April 2024.

25. R. A. Kalgaonkar, M. A. Bataweel, N. O. Baqader, N. Ullah, M. Mansha, Viscoelastic surfactants for acid diversion in downhole operations. Patent # US 12071838, Granted in August 2024.

Book Chapter

1.  A. Waheed, M.A. Jafar Mazumder, A, Al-Ahmed, P. Roy, N. Ullah. Cell Encapsulation. In: Jafar Mazumder M., Sheardown H., Al-Ahmed A. (eds) Functional Biopolymers. Polymers and Polymeric Composites: A Reference Series. Springer, Cham. 2018.

1. M. L. Firmansyah, G. A. N. Rohman, N. Ullah*. Machine-Learning-Optimized Palm-Biomass-Derived Activated Carbon Adsorbent for Gold Recovery from Mobile Leachate. ACS Sustainable Resour. Manage. DOI: 10.1021/acssusresmgt.5c00071

2. M. L. Firmansyah, M. Ashraf, N. Ullah*. A critical review on the removal of anionic dyes by cross-linked resin: Recent progress, challenges and future perspective. Sep. Purif. Technol., 2025, 360, 131111

3. M. L. Firmansyah, I. N. Rizki, N. Ullah*. Recent advances in urban mining technology: A focus on electronic waste recycling potential in Indonesia. Cleaner Waste System, 2025, 10, 100239

4. M. S. Manzar, T. Ahmad, M. Zubair, M. Nasir, H. A. Alqahtani, I. Chowhary, N. D. Mu’azu, L. Meili, I. U. Ahmed, M. L. Firmansyah, N. Ullah. Comparative adsorption of tetracycline by acid-modified silicomanganese fumes: kinetic and process modelling. Int. J. Environ. Anal. Chem., DOI: 10.1080/03067319.2024.2429788

5. M. L. Firmansyah, N Ullah. Ionic liquid-containing polymer including membrane for the removal of cobalt: Synthesis, adsorption, transport, and modeling studies. Sep. Purif. Technol., 353(Part A), 128332, 2025 (IF: 8.6)

6. M. L. Firmansyah, S. Abdel-Azeim, N. Ullah*. Efficient adsorption of methyl red, methyl orange and bromothymol blue by polyamine resin: Role of linearity and size of carboxylate in enhanced encapsulation and molecular matching. J. Mol. Liq., 411, 125792, 2024 (IF: 6.0)

7. M. Ilyas, N. Ullah, M. Mansha Mazen K. Nazal. Melamine-based hyper-cross-linked resin for efficient removal of total petroleum hydrocarbons (C₁₀-C₃₂) from aqueous solutions. Environ. Monit. Assess., 196, 605, 2024 (IF: 3.0)

8. M. L. Firmansyah, I. N. Rizki, I. Amalina, A. A. Jalil, N Ullah, Recovery of precious metals from mobile phone waste: Studies on leaching and adsorption by functionalized activated carbon. Results Eng., 22, 102011, 2024 (IF: 5.0)

9. T Ahmad, M. S. Manzar, S. Khan, M. A. Al-Sharafi, J. Georgin, D. S. P. Franco, N. Ullah*. Enhanced adsorption of bisphenol-A from water through the application of isocyanurate based hyper crosslinked resin. J. Mol. Liq., 395, 123861, 2024 (IF: 6.0)

10. M. Ashraf, N. Ullah, F. Raziq, I. Khan, K. R. Alhooshani, S. A. Ganiyu, M. N. Tahir. Carbon nitride (C₃N₃) decorated with non-noble metal Ni₂P co-catalyst based nanocomposites for photocatalytic water splitting. Electrochim. Acta, 470, 143296, 2023 (IF: 7.336)

11. M. Ashraf, R. Ali, I. Khan, N. Ullah, M. S. Ahmad, T. Kida, S. Wooh, W. Tremel, U. Schwingenschlögl, M. N. Tahir. Bandgap engineering of melon using highly reduced graphene oxide for enhanced photoelectrochemical hydrogen evolution. Adv. Mater., 35, 2301342, 2023 (IF: 29.4)

12. S. Shamim, K. M. Khan, M. Ali, M. Mahdavi, U. Salar, M. Mohammadi-Khanaposhtani, M. A. Faramarzi, N. Ullah, M. Taha. Diphenyl-substituted triazine derivatives: synthesis, α-glucosidase inhibitory activity, kinetics and in silico studies. Future Med. Chem., 15, 1651-1661, 2023 (IF: 4.2)

13. M. Mansha, M. Ilyas, D. Rao, N. Ullah*, M. K. Nazal. Synthesis of melamine‑isocyanurate‑based hyper‑cross‑linked resin for ultrahigh removal of chlorophenols from aqueous solutions. Polym. Bull., 80, 10051–10071, 2023 (IF: 3.2)

14. T. Ahmad, M. S. Manzar, J. Georgin, D. S.P. Franco, S. Khan, L. Meili, N. Ullah*. Development of a new hyper crosslinked resin based on polyamine-isocyanurate for the efficient removal of endocrine disruptor bisphenol-A from water. J. Water Process. Eng., 53, 103623, 2023 (IF: 7.0)

15. F. Saleem, M. Haider, K. M. Khan, M. Özil, N. Baltaş, Z. Ul-Haq, U. Qureshi, U. Salar, M. Taha, S. Hameed, N. Ullah. Regioselective syntheses of 2-oxopyridine carbonitrile derivatives and evaluation for antihyperglycemic and antioxidant potential. Int. J. Biol. Macromol., 241, 124589, 2023 (IF: 8.2)

16. M. Ashraf, M. Ayaz, M. Khan, S. F. Adil, W. Farooq, N. Ullah, M. N. Tahir. Recent trends in sustainable solar energy conversion technologies: Mechanisms, prospects, and challenges. Energy Fuels, 37, 6283–6301, 2023 (IF: 5.3)

17. M. Ashraf, N. Ullah, I. Khan, W. Tremel, S. Ahmad, M. N. Tahir. Photoreforming of waste polymers for sustainable hydrogen fuel and chemicals feedstock: Waste to energy. Chem. Rev., 123, 8, 4443–4509, 2023 (IF: 62.1)

18. T. Ahmad, M. S. Manzar, S. U. Khan, I. W. Kazi, N. D. Mu’azu, N. Ullah*. Synthesis and adsorptive performance of a novel triazine core-containing resin for the ultrahigh removal of malachite green from water.  Arab. J. Sci. Eng., 48, 8571–8584, 2023 (IF: 2.9)

19. M. S. Manzar, T. Ahmad, M. Zubair, N. Ullah, H. A. Alqahtani, B. M. V. da Gama, J. Georgin, M. Nasir, N. D. Mu'azu, J. M. Al Ghamdi, H. A. Aziz, L. Meili. Comparative adsorption of Tetracycline onto unmodified and NaOH-modified Silicomanganese fumes: Kinetic and process modeling. Chem. Eng. Res. Des., 192, 521-533, 2023 (IF: 3.9)  

20. T. Ahmad, Murtaza, S. S. Shah*, S. Khan, A. A. Khan, N. Ullah*, M. Oyama, M. A. Aziz. Preparation and electrochemical performance of Convolvulus arvensis-derived activated carbon for symmetric supercapacitors. Mater. Sci. Eng. B., 292, 116430, 2023 (IF: 3.6)

21. N. H. Hemasiri, M. Ashraf, S. Kazim, R. Graf, R. Berger, N. Ullah, M. N. Tahir, S. Ahmad. Interface tweaking of perovskite solar cells with carbon nitride-based 2D materials. Nano Energy, 109, 108326, 2023 (IF: 17.6)

22. M. Ashraf, N. H. Hemasiri, S. Kazim, N. Ullah, M. Khan, S. A. Ganiyu, K. R. Alhooshani, M. N. Tahir, S. Ahmad. Hole transport layer/perovskite interface engineering with low band gap 2D carbon nitrides in perovskite solar cells fabrication. Sustain. Energy Fuels, 7, 763–768, 2023 (IF: 5.6)

23. F. Saleem, K. M. Khan, N. Ullah, M. Özil, N. Baltaş, S. Hameed, U. Salar, A. Wadood, A. U. Rehman, M. Kumar, M. Taha, S M. Haider. Bioevaluation of synthetic pyridones as dual inhibitors of α-amylase and α-glucosidase enzymes and potential antioxidants. Arch. Pharm., 356, 2200400, 2023 (IF: 5.1)

24. M. Mansha, I. W. Kazi, M. S. Manzar, T. Ahmed, A. Waheed, N. Ullah*, N. I Blaisi. Ultrahigh removal of methyl orange, acid blue-92 and malachite green by a novel triazine-based polyamine resin: Synthesis, isotherm and kinetic studies. Int. J. Environ. Anal. Chem., 103, 396–414, 2023 (IF: 2.6)

25.  M. Ashraf, M. S. Ahmad, Y. Inomata, N. Ullah*, M. N. Tahir, T. Kida. Transition metal nanoparticles as nanocatalysts for Suzuki, Heck and Sonogashira cross-coupling reactions. Coord. Chem. Rev., 473, 214928, 2023 (IF: 24.833)

26. M. Nawaz , M. Taha, F. Qureshi, N. Ullah, M. Selvaraj, S. Shahzad, S. Chigurupati, S.A. Abubshait, T. Ahmad, S. Chinnam, S. Hisaindee. Synthesis, α-amylase and α-glucosidase inhibition and molecular docking studies of indazole derivatives. J. Biomol. Struct. Dyn., 40, 10730-10740, 2022 (IF: 5.232)

27. F. Qureshi, M. Nawaz, S. Hisaindee, S. A. Almofty, M. A. Ansari, Q. M. S. Jamal, N. Ullah, M. Taha, O. Alshehri, B. Huwaimel, M. K. B. Break. Microwave assisted synthesis of 2-amino-4-chloro-pyrimidine derivatives: Anticancer and computational study on potential inhibitory action against COVID-19. Arab. J. Chem., 15, 104366, 2022 (IF: 6.212)

28. M. Mansha, R. A. Kalgaonkar, N. Baqader, N. Ullah*. Synthesis and properties of exceptionally thermo-switchable viscoelastic responsive zwitterionic gemini surfactants in highly saline water. ACS Omega, 7, 39822–39829, 2022 (IF: 4.132)

29. C. X. A. Tan, R. Li, F. Zhang, L. Dai, N. Ullah*, Yixin Lu*. Synthesis of axially chiral CF₃-substituted 2-arylpyrroles by sequential phosphine-catalyzed asymmetric [3+2] annulation and oxidative central-to-axial chirality transfer. Angew. Chem. Int., Ed., 61(47), e202209494, 2022 (IF: 16.823)

30. T. Ahmad, S. Khan, T. Rasheed, N. Ullah*. Graphitic carbon nitride nanosheets as promising candidates for the detection of hazardous contaminants of environmental and biological concern in aqueous matrices. Microchim. Acta, 189, 426, 2022 (IF: 5.888)

31. T. Ahmad, S. Khan, N. Ullah*. Recent advances in the catalytic asymmetric Friedel-Crafts reactions of indoles. ACS Omega, 7, 35446–35485, 2022 (IF: 4.132). Invited Review Article

32. M. Mansha,T. Ahmad, N. Ullah, S. A. Khan, M. Ashraf, S. Ali, B. Tan, I. Khan. Photocatalytic Water-Splitting by Organic Conjugated Polymers: Opportunities and Challenges. Chem. Rec., 22(7), e202100336, 2022 (IF: 6.935)

33. T. Ahmad, S. Abdel-Azeim, S. Khan, N. Ullah*. Turn-on fluorescent sensors for nanomolar detection of zinc ions: Synthesis, properties and DFT studies. J. Taiwan Inst. Chem. Eng.,139, 104507, 2022 (IF: 5.447)

34. T. Rasheed, S. Khan, T. Ahmed, N. Ullah*. Covalent organic frameworks-based membranes as promising modalities from preparation to separation applications: An overview. Chem. Rec., 22(8), e202200062, 2022 (IF: 6.935)

35. T. Ahmad, A. Waheed, S. Abdel-Azeim, S. Khan, N. Ullah*. Three new turn-on fluorescent sensors for the selective detection of Zn2+: Synthesis, properties and DFT studies. Arab. J. Chem., 15, 104002, 2022 (IF: 6.212)

36. M. Haroon, M. Ashraf, N. Ullah, M. N. Tahir, A. A. Al-Saadi. SERS and EC-SERS detection of local anesthetic procaine using Pd loaded highly reduced graphene oxide nanocomposite substrate. Spectrochim. Acta A Mol. Biomol. Spectrosc., 278, 121381, 2022 (IF: 4.831)

37. S. Khan, T. Ahmed, T. Rasheed, N. Ullah*. Recent applications of vinylethylene carbonates in Pd-catalyzed allylic substitution and annulation reactions: Synthesis of multifunctional allylic and cyclic structural motifs. Coord. Chem. Rev., 462, 214526, 2022 (IF: 24.833)

38. M. R. S. A. Janjua, R. Mahmood, M. Haroon, F. Anwar, M. U. Khan, N. Ullah. In Silico modelling of viscoelastic surfactants: Towards NLO response and novel physical insights through bridging acceptor. J. Clust. Sci., 33, 519-528, 2022 (IF: 3.447)

39. S. A. Popoola, A. T. Onawole, N. Ullah, A. A. Al-Saadi. Structural and energetic effect of the intramolecular hydrogen bonding in 4,6-dihaloresorcinols: ab initio calculation, vibrational spectroscopy, and molecular docking studies. Struc. Chem., 33, 57-69, 2022 (IF: 1.795)

40. M. S. Manzar, T. Ahmad, N. Ullah, P. V. Chellam, J. John, M. Zubair, R. J.Brandão, L. Meilif, O. Alagha, E. Çevik. Comparative adsorption of Eriochrome Black T and Tetracycline by NaOH-modified steel dust: Kinetic and process modeling. Sep. Purif. Technol., 287, 120559, 2022 (IF: 9.136)

41. M. A. Hussain, I. Malik, I. Shad, F. Amjad, M. Amin, M. N. Tahir, N. Ullah, M. Ashraf, M. I. Irfan. Design, characterization and enhanced bioavailability of hydroxypropylcellulose-based novel bioconjugates of a fluoroquinolone antibiotic gemifloxacin. Cellul. Chem. Technol., 55, 1019-1027, 2021 (IF: 1.387)

42. T. Ahmed, M. Mansha, I. W. Kazi, A. Waheed, N. Ullah*. Synthesis of 3,5-diaminobenzoic acid containing cross-linked porous polyamine resin as a new adsorbent for efficient removal of cationic and anionic dyes from aqueous solutions. J. Water Process. Eng., 43, 102304, 2021 (IF: 7.340)

43. N. Wang, Z. Wu, J. Wang, N. Ullah*, Y. Lu. Recent applications of asymmetric organocatalytic annulation reactions in natural products synthesis. Chem. Soc. Rev., 50, 9766-9793, 2021 (IF: 60.615)

44. M. Mansha, M. Taha, E. H. Anouar, N. Ullah*, The design of fluoroquinolone-based cholinesterase inhibitors: Synthesis, biological evaluation and in silico docking studies. Arab. J. Chem., 14, 103211, 2021 (IF: 6.212)

45. A. Waheed, N. Baig, N. Ullah, W. Fallath. Removal of hazardous dyes, toxic metal ions and organic pollutants from wastewater by using porous hyper-cross-linked polymeric materials: A review of recent advances. J. Environ. Manage., 287, 112360, 2021 (IF: 8.910)

46. M. N. Tahir, M. Ashraf, S. S. Shah, I. Khan, M. A. Aziz, N. Ullah, M. Khan, S. F. Adil, Z. Liaqat, M. Usman, W. Tremel. A High‐performance asymmetric supercapacitor based on tungsten oxide nanoplates and highly reduced graphene oxide electrodes. Chem. Eur. J., 27, 6973-6984, 2021 (IF: 5.020)

47. M. Mansha, N. Ullah*, R. A. Kalgaonkar, N. Baqader, Synthesis, characterization, and viscosification of amidosulfobutaine and zwitterionic gemini surfactants. J. Surfact. Deterg., 24, 697-706, 2021 (IF: 1.972)

48. Bushra, S. Shamim, K. M. Khan, N. Ullah, M. Mahdavi, M. A. Faramarzi, B. Larijani, U. Salar, R. Rafique, M. Taha, S. Perveen. Synthesis, in vitro, and in silico evaluation of indazole schiff bases as potential α-glucosidase inhibitors. J. Mol. Struct., 1242, 130826, 2021 (IF: 3.841)  

49. T. Ahmad, N. Ullah*. The oxa-Michael reaction in the synthesis of 5- and 6-membered oxygen-containing heterocycles. Org. Chem. Front., 8, 1329-1344, 2021 (IF: 5.456)

50. N. Ullah, H. Stoeckli-Evans. The crystal structures, Hirshfeld surface analyses and energy frameworks of 8-{1-[3-(cyclopent-1-en-1-yl)benzyl]piperidin-4-yl}-2-methoxyquinoline and 8-{4-[3-(cyclopent-1-en-1-yl)benzyl]piperazin-1-yl}-2-methoxyquinoline. Acta Cryst. E, 77, 372–377, 2021 (IF: --)

51. N. Ullah, H. Stoeckli-Evans. Crystal structure and Hirshfeld surface analysis of the hydrochloride salt of 8-{4-[(6-phenylpyridin-3-yl)methyl] piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one. Acta Cryst. E, 77, 208–212, 2021 (IF: --)

52. M. R. S. A. Janjua, M. U. Khan, M. Khalid, N. Ullah, R. Kalgaonkar, K. Alnoaimi, N. Baqader, S. Jamil. Theoretical and conceptual framework to design efficient dye-sensitized solar cells (DSSCs): Molecular engineering by DFT method. J. Clust. Sci., 32, 243-253, 2021 (IF: 3.447)

53. F. A. Khan, S. Shamim, N. Ullah, M. A. Lodhi, K. M. Khan, F. Ali, S. G. Afridi, S. Perveen, A. Khan. Dihydropyrimidones: A ligands urease recognition study and mechanistic insight through in vitro and in silico approach. Med. Chem. Res., 30, 120-132, 2021 (IF: 2.351)

54. A. Waheed, S. Abdel-Azeim, N. Ullah*, Sulayman A. Oladepo, Design and synthesis of two new terbium and europium-complex-based luminescent probes for the selective detection of zinc ions. Luminescence, 35, 1238-1247, 2020 (IF: 2.613)

55. A. Waheed, I. W. Kazi, M. S. Manzar, T. Ahmad, M. Mansha, N. Ullah*, N. I. Blaisi. Ultrahigh and efficient removal of Methyl orange, Eriochrom Black T and acid Blue 92 by triazine based cross-linked polyamine resin: Synthesis, isotherm and kinetic studies. Colloids Surf. A Physicochem. Eng. Asp., 607, 125472, 2020 (IF: 5.518)

56. M. Nawaz, M. Taha, F. Qureshi, N. Ullah, M. Selvaraj, S. Shahzad, S. Chigurupati, A. Waheed, F. A. Almutairi. Structural elucidation, molecular docking, α-amylase and α-glucosidase inhibition studies of 5-amino-nicotinic acid derivatives. BMC Chem., 14, article 43, 2020 (IF: 4.095)

57. M. A. Hussain, I. Shad, I. Malik, F. Amjad, T. Kausar, Kamran, M. Sher, M. N. Tahir, N. Ullah, M. Ashraf, S. N. A. Bukhari. Hydroxypropylcellulose-flurbiprofen conjugates: design,characterization, anti-inflammatory activity and enhancedbioavailability. Saudi Pharm. J., 28, 869-875, 2020 (IF: 4.562)

58. M. Mansha, A. Waheed, T. Ahmad, I. W. Kazi, N. Ullah*, Synthesis of a novel polysuccinimide based resin for the ultrahigh removal of anionic azo dyes from aqueous solution. Environ. Res., 184, 109337, 2020 (IF: 8.431)

59. S. Shamim, K. M. Khan, N. Ullah, S. Chigurupati, A. Wadood, A. U. Rehman, M. Ali, U. Salar, A. Alhowail, M. Taha, S. Perveen. Synthesis and Screening of (E)-3-(2-Benzylidenehydrazinyl)-5,6-diphenyl-1,2,4-triazine Analogs as Novel Dual Inhibitors of α-Amylase and α-Glucosidase. Bioorg. Chem., 101, 303979, 2020 (IF: 5.307)

60. A. Waheed, T. Ahmad, M. Haroon, N. Ullah*, A highly sensitive and selective fluorescent sensor for Zinc (II) ions based on a 1, 2, 3‐triazolyl‐functionalized 2,2’‐dipicolylamine (DPA). ChemistrySelect, 5, 5300-5305, 2020 (IF: 2.307)

61. M. A. Hussain, I. Shad, I. Malik, F. Amjad, M. N. Tahir, N. Ullah, M. Ashraf, M. Sher. Design, characterization and enhanced bioavailability of hydroxypropylcellulose-naproxen conjugates. Arab. J. Chem., 13, 5717-5723, 2020 (IF: 6.212)

62. M. Ashraf, I. Khan, M. Usman, A. Khan, S. S. Shah, A. Z. Khan, K. Saeed, M. Yaseen, M. F. Ehsan, M. N. Tahir, N. Ullah*. Hematite and Magnetite Nanostructures for Green and Sustainable Energy Harnessing and Environmental Pollution Control: A Review. Chem. Res. Toxicol., 33, 1292-1311, 2020 (IF: 3.973) This article was featured on the cover page of the journal.

63. A. Waheed, M. Mansha, I. W. Kazi, N. Ullah*. Synthesis of a novel 3,5-diacrylamidobenzoic acid based hypercross-linked resin for the efficient adsorption of Congo Red and Rhodamine B. J. Hazard. Mater., 369, 528-553, 2019 (IF: 14.222)

64. M. Mansha, M. Younas, M. A. Gondal, N. Ullah*. 1,5-Naphthyridine-based conjugated polymers as co-sensitizers for dyesensitized solar cells. Sol. Energy 194, 682-687, 2019 (IF: 7.188)

65. M. S. Manzar, A. Waheed. I. W. Kazi, N. I. Blaisi, N. Ullah*. Synthesis of a novel epibromohydrin modified crosslinked polyamine resin for efficient removal of methyl orange and eriochrome black T. J. Taiwan Inst. Chem. Eng., 97, 424-432, 2019 (IF: 5.447)

66. J. Zhang, W-L. Chan, L. Chen, N. Ullah*, Y. Lu*. Creation of bispiro-[pyrazolone-3,3’oxindoles via a phosphine catalyzed enantioselective [3 + 2] annulation of the Morita−Baylis−Hillman carbonates with pyrazoloneyldiene oxindoles. Org. Chem. Front., 6, 2210-2214, 2019 (IF: 5.456)

67. A. Waheed, M. Mansha, D. Ahmed, N. Ullah*. The first report on the in vitro antimicrobial activities of extracts of leaves of E. Serrata. Saudi J. Biol. Sci., 3, 13408-13418, 2019 (IF: 4.052)

68. I. W. Kazi, S. A. Ali, N. Ullah. A new resin containing aminopropylphosphonate chelating ligand for high-performance mitigation of heavy metal ions. ChemistrySelect, 3, 13408-13418, 2018 (IF: 2.307)

69. M. M. Musa, I. Karume, M. Takahashi, S. Hamdan; N. Ullah, Stereoinversion of R-Configured Secondary Alcohols Using a Single Enzymatic Approach. ChemistrySelect, 3, 10205-10208, 2018 (IF: 2.307)

70. A. A. Boali, M. Mansha, A. Waheed, N. Ullah*, Synthesis of two new 1,5-naphthyridine-based conjugated polymers as calorimetric probe for iodide ion in water, J. Taiwan Inst. Chem. Eng., 91, 420-426, 2018 (IF: 5.447)

71. M. Mansha, U. Mehmood, N. Ullah*, Poly(phenylene cyanovinylenes) carbazole based conjugated polymer as a photosensitizer for dye-sensitized solar cells. Mater. Lett.,  231, 56-59, 2018 (IF: 3.574)

72. S. Popoola, N. Ullah, A. Al-Saadi, Spectroscopic and DFT assessment of bridging ligand effect on the structural and electronic properties of dinuclear iridium- and rhodium-based complexes. Inorg. Chim. Acta., 482, 299-306, 2018 (IF: 3.118)

73. A. Waheed, M. Mansha, N. Ullah*. Nanomaterials-based electrochemical detection of heavy metals in water: Current status, challenges and future direction. Trends Anal. Chem., 105, 37-51, 2018 (IF: 14.908)

74. A. T. Onawole, M. A. Ghassan, N. Ullah, A. A. Al-Saadi, Structural, spectroscopic and docking properties of resorcinol, its –OD isotopomer and dianion derivative: a comparative study. Struc. Chem., 29, 403-414, 2018 (IF: 1.795)

75. N. Ullah*, M. Mansha, I. Khan, A. Qurashi, Synthesis, Nanomaterial-based optical chemical sensors for the detection of heavy metals in water: Recent advances  and challenges. Trend. Anal. Chem., 100, 155-166, 2018 (IF: 14.908)

76. M. Altaf, M. Sohail, M. Mansha, N. Iqbal, M. Sher, A. Fazal, N. Ullah, A. A. Isab, Synthesis, Characterization and Photoelectrochemical-Catalytic Studies of a Water Stable Zinc-based Metal-organic Framework. ChemSusChem., 11, 542-546, 2018 (IF: 9.140)

77. H. Ni, Z. Tang, W. Zheng, W. Yao, N. Ullah*, Y. Lu*, Enantioselective phosphine-catalyzed formal [4+4] annulation of a,b-unsaturated imines and allene ketones: Construction of eight-membered rings. Angew. Chem. Int. Ed., 129(45), 14410-14414, 2017 (IF: 16.823) This synthesis was featured in Synfacts 2018, 14(01), 0089.

78. A. T. Onawole, A. F. Al-Ahmadi, Y. S. Mary, C. Y. Panicker, N. Ullah, S. Armaković, S. J. Armaković, C. Van Alsenoy, A. A. Al-Saadi, Conformational, vibrational and DFT studies of a newly synthesized arylpiperazine-based drug and evaluation of its reactivity towards the human GABA receptor. J. Mol. Struct., 1147, 266–280, 2017 (IF: 3.841)

79. H. Ni, Z. Yu, W. Yao, Y. Lan*, N. Ullah*, Y. Lu*. Catalyst-controlled regioselectivity in phosphine catalysis: the synthesis of spirocyclic benzofuranones via regiodivergent [3 + 2] annulations of aurones and an allenoate. Chem. Sci., 8, 5699-5704, 2017 (IF: 9.969)

80. U. Mehmood, M. Mansha, N. Ullah*. 3-Hexyl-2,5-diphenylthiophene:phenylene vinylene-based conjugated polymer for solar cells application. Dyes Pigm., 144, 218-222, 2017 (IF: 5.122)

81. W. Yao, Z. Yu, S. Wen, H. Ni, N. Ullah*, Y. Lan*, Y. Lu*. Chiral phosphine-mediated intramolecular [3 + 2] annulation: enhanced enantioselectivity by achiral Brønsted acid. Chem. Sci., 8, 5196-5200, 2017 (IF: 9.969) This synthesis was featured in the Organic Chemistry Portal, URL: https://www.organicchemistry.org/Highlights/2018/30July.shtm

82. N. Ullah*, M. Altaf, M. Mansha. Crystal structures of 1-aryl-4-(biarylmethylene)piperazine and piperidine, structurally related to  adoprazine. J. Struc. Chem., 58, 1697-1702, 2017 (IF: 1.004)

83. M. Mansha, I. Khan, N. Ullah*, A. Qurashi. Synthesis, characterization and visible-light-driven photoelectrochemical hydrogen evolution reaction of carbazole-containing conjugated polymers. Int. J. Hyd. Energy, 42, 10952-10961, 2017 (IF: 7.139)

84. M. Mansha, I. Khan, N. Ullah*, A. Qurashi, M. Sohail. Visible-light driven photocatalytic oxygen evolution reaction from new poly(phenylene cyanovinylenes). Dyes Pigm., 143, 95-102, 2017 (IF: 5.122)

85. M. Altaf, M. Mansha, M. Sohail, A. A. Isab, N. Ullah, S. A. Khan, M. Sher, H. Stoeckli-Evans. Synthesis, structures and photoluminescence properties of mixed ligand divalent metal–organic frameworks. New J. Chem., 41, 2980-2986, 2017 (IF: 3.925)

86. M. Mansha, M. Sohail, N. Ullah*. Synthesis, characterization and properties of new 3-hexyl-2,5-diphenylthiophene:phenylene vinylenes copolymers as colorimetric sensor for iodide anion. J. Applied. Pol. Sci., 134, app.44948, 2017 (IF: 3.057)

87. M. N. Siddiqui, M. Mansha, U Mehmood, N. Ullah, A. F. Al-Betar a, A. Al-Saadi. Synthesis and characterization of functionalized polythiophene for polymer-sensitized solar cell. Dyes Pigm., 141, 406-412, 2017 (IF: 5.122)

88. M Mansha, U. U. Kumari, Z. Cournia, N. Ullah*. Pyrazole-based potent inhibitors of GGT1: Synthesis, biological evaluation, and molecular docking studies. Eur. J. Med. Chem., 124, 666-676, 2016 (IF: 7.088)

89. S. Wen, X. Li, W. Yao, A. Waheed, N. Ullah*, Y. Lu*. Highly Enantioselective Conjugate Addition of Glycine Imines to Activated Alkenes Catalyzed by Amino-Acid-Derived Chiral Phosphonium Salts. Eur. J. Org. Chem., 25, 4298-4301, 2016 (IF: 3.261)

90. N. Ullah, M. Mansha, P. J. Casey*. Protein Geranylgeranyltransferase Type 1 as a Target in Cancer. Curr. Cancer Drug Targets, 16, 563-571, 2016 (IF: 2.907)

91. A. Farooq, L. Shahazadi, M. Bajda, N. Ullah, A. Rauf, S. A. Shahzad, A. F. Khan, M. Ashraf, M. Yar*. Organocatalyzed novel synthetic methodology for highly functionalized piperidines as potent a-glucosidase inhibitors. Arch. Pharm. Chem. 349, 1-9, 2016 (IF: 4.613)

92. Y. Abbas, M. Mansha, N. Ullah*. The first total synthesis of potent antitumoral (±)-mafaicheenamine A, unnatural 6-fluoromafaicheenamine A and expedient synthesis of clausine E. RSC Advances, 6, 26104-26110, 2016 (IF: 4.036)

93. H. Ni, W. Yao, A. Waheed, N. Ullah*, Y. Lu*. Enantioselective [4 + 2]-Annulation of Oxadienes and Allenones Catalyzed by an Amino Acid Derived Phosphine: Synthesis of Functionalized Dihydropyrans. Org. Lett., 18, 2138-2141, 2016 (IF: 6.072)

94. M. Mansha, A. Qurashi*, N. Ullah, F. O. Bakare, I. Khan, Z. H. Yamani. Synthesis of In₂O₃/graphene heterostructure and their hydrogen gas sensing properties. Ceram. Int., 42, 11490-11495, 2016 (IF: 5.532)

95. A. R. Raza*, A. Sultan, N. Ullah, M. R. S. A. Janjua, K. M. Khan. Fragmentation study of substituted chalcones: Gas phase formation of benz-1-oxin cation. Modern Chem. Appl., 4, 173, 2016 (IF: --)

96. M. Mansha, N. Ullah*, Khalid Alhooshani. Synthesis of structural analogues of GGT1-DU40, a potent GGTase-1 inhibitor. Z. Naturforsch. B, 71, 333-344, 2016 (IF: 1.115)

97. S. M. S. Hussain, M. A. Animashaun, M. S. Kamal, N. Ullah, I. A. Hussein, A. S. Sultan. Synthesis, Characterization and Surface Properties of Amidosulfobetaine Surfactants Bearing Odd-Number Hydrophobic Tail. J. Surfact. Deterg., 19, 413-420, 2016 (IF: 1.972)

98. S. Mutahir, J. Jon´czyk , M. Bajda , I. U. Khan, M. A. Khan, N. Ullah, M. Ashraf, Qurat-ul-Ain, S. Riaz, S. Hussain, M. Yar*. Novel biphenyl bis-sulfonamides as acetyl and butyrylcholinesterase inhibitors: Synthesis, biological evaluation and molecular modeling studies. Bioorg. Chem., 64, 13-20, 2016 (IF: 5.307)

99. S. A. Ali,* I W. Kazi, N. Ullah. New Chelating ion-exchange resin synthesized via the cyclopolymerization protocol and its uptake performance for metal ion removal. Ind. Eng. Chem. Res., 54, 9689−9698, 2015 (IF: 4.326)

100. A. O. Ba-Salem, N. Ullah*, M. N. Shaikh*, M. Faiz, Z. Haq. Gd-complexes of new arylpiperazinyl conjugates of DTPA-bis(amides): Synthesis, characterization and magnetic relaxation properties. Molecules, 20, 7807-7819, 2015 (IF: 4.927) 

101. A. O. Ba-Salem, M. N. Shaikh, N. Ullah*, M. Faiz. Synthesis and magnetic relaxation properties of new Gd(III) complexes derived from DTPA-b(amide) conjugates of arylpiperazinyl amines. Inorg. Chem. Commun., 56, 5-7, 2015 (IF: 3.428) 

102. S. Mutahir, M. Yar, M. A. Khana, N. Ullah, S. A. Shahzad, I. U. Khan, R. A. Mehmood, M. Ashraf, R. Nasar, E. Pontiki. Synthesis, Characterization, Lipoxygenase inhibitory activity and in silico Molecular Docking of Biaryl bis(benzenesulfonamide) and Indol-3-yl-hydrazide derivatives. J. Iran. Chem. Soc., 12, 1123-1130, 2015 (IF: 2.271)

103. N. Ullah*, M. Altaf, M. Mansha, A. O. Ba-Salem. Crystal structures of dual dopamine D2 and serotonin 5-HT1A active arylpiperidinyl-2(1H)-3,4 dihydroquinolinones. J. Struc. Chem., 56, 1441-1445, 2015 (IF: 1.004)

104. M. Yar, M. Bajda, S. Shahzad, N. Ullah, M. Ashraf, M. M. Gilani, A. Rauf, A. Shaukat. Organocatalyzed solvent free an efficient novel synthesis of 2,4,5-trisubstituted imidazoles for a-glucosidase inhibition to treat diabetes. Bioorg. Chem., 58, 65-71, 2015 (IF: 5.307)

105. M. Mansha, Y. Abbas, N. Ullah*. Microwave assisted claisen rearrangement: Synthesis of naturally occurring trail-resistance-overcoming tyrosine derivative. Synthetic Commun., 45, 609-614, 2015 (IF: 1.937)

106. M. A. Sanhoob, O. Muraza, E. M. Al-Mutairi, N. Ullah. Role of crystal growth modifiers in the synthesis of ZSM-12 zeolite. Adv. Powder Technol., 26, 188-192, 2015 (IF: 4.969)

107. S. A. Ali, I. W. Kazi, N. Ullah. Construction of aqueous two-phase systems of the cyclopolymer of (diallylamino)-propylphosphonate and its sulfur dioxide copolymer with polyoxyethylene using 1H NMR spectroscopy. J. Chem. Eng. Data, 59, 3863-3872, 2014 (IF: 3.119)

108. U. Ghani, N. Ullah*, S. A. Ali, H. A. Al-Muallem. Dual D2 and 5-HT1A receptors binding affinities of 1-aryl-4-(diarylmethylene)piperazines and piperidines. Asian J. Chem., 26, 8358-8362, 2014 (IF: --)

109. N. Ullah*. Synthesis and dual D2 and 5-HT1A receptor binding affinities of 7-piperazinyl and 7-piperidinyl-3,4-dihydroquinazolin-2(1H)-ones. Med. Chem., 10, 484-496, 2014 (IF: 2.329)

110. N. Ullah*. M. Altaf, Crystal tructures of 1-Aryl-4-(biarylmethylene)piperazines, Structurally Related to Adoprazine. Crystallog. Rep., 59, 1057-1062, 2014. (IF: 0.667)

111. M. Yar*, M. Bajda, R. A. Mehmood, L. R. Sidra, N. Ullah, L. Shahzadi, M. Ashraf, T. Ismail, S. A. Shahzad, Z. A. Khan, S. A. R. Naqvi, N. Mahmood. Design and synthesis of new dual binding site cholinesterase inhibitors: In vitro inhibition studies with in silico docking. Lett. Drug Des. Disc., 11, 331-338, 2014 (IF: 1.099)

112. N. Ullah*, H. Stoeckli-Evans. 8-{1-[(40-Fluoro-[1,10-biphenyl]-4-yl)-methyl]piperidin-4-yl}-3,4-dihydro-quinolin-2(1H)-one chloroform 0.25-solvate. Acta Cryst. E70, o103-o104, 2014 (IF: --)

113. S. L. Rubab, B. Nisar, A. R. Raza*, N. Ullah*, Muhammad Nawaz Tahir. Asymmetric Synthesis of 4,1-benzoxazepine-2,5-diones-effect of the halogen of (2S)-α-haloacids. Molecules, 19, 139-148, 2014 (IF: 4.927) 

114. N. Ullah*. Synthesis of 6-piperazinyl-3,4-dihydroquinazolin-2(1H)-ones. Asian J. Chem., 26, 2031-2036, 2014.

115. N. Ullah*. Synthesis and dual D2 and 5-HT1A receptor binding affinities of 5-piperidinyl and 5-piperazinyl-1H-benzo[d]imidazol-2(3H)-ones. J. Enzyme Inhib. Med. Chem., 29, 281-291, 2014 (IF: 5.756) 

116. N. Ullah*, A. A. Q. Al-Shaheri. Synthesis of new 4-aryl-1 (biarylmethylene)piperidines, structural analogues of adoprazine (SLV313). Z. Naturforsch. B, 67b, 253-262, 2012 (IF: 1.115)

117. M. Yar*, M. Arshad, M. N. Akhtar, S. A. Shahzad, I. U. Khan, Z. A. Khan, N. Ullah, I. Ninomiya. Studies towards the synthesis of (±)-reserpine: Photocyclization mediated a novel and efficient synthesis of 11,18-dimethoxy-(20α)-18,19-didehydroyohimban-17-one. Eur. J. Chem., 3, 26-31, 2012 (IF: --)

118. N. Ullah*. Synthesis of New 1-Aryl-4-(biarylmethylene)piperazine Ligands, Structurally Related to Adoprazine (SLV313). Z. Naturforsch. B, 67b, 75 84, 2012 (IF: 1.115)

119. N. Ullah*, S. A. Haladu, B. A. Moosa. An improved total synthesis of spermatinamine, an inhibitor of isoprenylcysteine carboxy methyltransferase. Tetrahedron Lett., 52, 212-214, 2011 (IF: 2.032)

120. N. Ullah*, S. A. Haladu. The First Total Synthesis of Aspergillusol A, an α-Glucosidase Inhibitor. Nat. Prod. Commun., 5, 1077-1080, 2010 (IF: 1.496)

121. U. Ghani*, N. Ullah. New potent inhibitors of tyrosinase: Novel clues to binding of 1,3,4-thiadiazole-2(3H)-thiones, 1,3,4-oxadiazole-2(3H)-thiones, 4-amino-1,2,4-triazole-5(4H)-thiones, and substituted hydrazides to the dicopper active site. Bioorg. Med. Chem., 18, 4042-4048, 2010 (IF: 3.461)

122. N. Ullah*. Undecyl 2,3-dimethoxycinnamate from Daphne oleoides. Asian J. Chem., 22, 2456-2458, 2010 (IF: --)

123. K. M. Arafeh, N. Ullah*. Synthesis of neolamellarin A, an inhibitor of hypoxia-inducible factor-1. Nat. Prod. Commun., 4, 925-926, 2009 (IF: 1.496)

124. N. Ullah*. The first total synthesis of racemic hydroxymoloka’iamine. Z. Naturforsch. B, 64b, 464-466, 2009 (IF: 1.115)

125. N. Ullah*. The first total synthesis of galloyl tyramine. Z. Naturforsch. B, 64b, 879-782, 2009 (IF: 1.115)

126. N. Ullah*, K. M. Arafeh. The first total synthesis of aplysamine 6, an inhibitor of isoprenylcysteine carboxy methyltransferase. Tetrahedron Lett., 50, 158-160, 2009 (IF: 2.032)

127. N. Ullah, C. N. Fali, I. D. Spenser*. Synthesis of aminohydroxy acetone. Can. J. Chem., 82, 579-582, 2004 (IF: 1.051)

128. N. Ullah, J. Zeidler, I. D. Spenser*. Synthesis of deuterium labeled 2’-hydroxypyridoxols. Synlett., 09, 1344-1348, 2003 (IF: 2.170)

129. J. Zeidler, N. Ullah, R. N. Gupta, R. M. Pauloski, B. G. Sayer and I. D. Spenser*. 2’-hydroxypyridoxol, a precursor of vitamins B6 and B1 in Yeast. J. Am. Chem. Soc., 124, 4542-4543, 2002 (IF: 16.383)

130. N. Ullah, W. Seebacher, E. Haslinger*, J. Jurenitsch, K. Rauchensteiner, R. Weis. Synthesis and haemolytic properties of lactosides of glycerrhetic acid derivative. Monatsh. Chem., 133,139-150, 2002 (IF: 1.613)

131. N. Ullah*, P. Sonya, E. Haslinger, W. Ahmed, M. Arfan, A. Malik. A Lignoid glycoside and dimeric phenylpropanoids from Daphne oleoides. Helv. Chim. Acta, 84, 157-162, 2001 (IF: 2.201)

132. M. Riaz, A. Malik*, S. K. Sadozhai, M. Hussain, N. Ullah. Daphwazirin, a biscoumarin glycopyranoside from Daphne oleoides. Nat. Prod. Res., 15, 433-438, 2001 (IF: 2.488)

133. U. Ghani, K. K. S. Ng, Atta-ur-Rahman, M. I. Choudhary, N. Ullah, M. N. G. James*. Crystal Structure of g-Chymotrypsin in complex with 7-hydroxycoumarin. J. Mol. Biol., 314, 519-525, 2001 (IF: 6.151)

134. N. Ullah, W. Seebacher, R. Weis, J. Jurenitsch, K. Rauchensteiner, E. Haslinger*. Synthesis and haemolytic properties of glycerrhetic acid glycosides. Monatsh. Chem., 131, 787-794, 2000 (IF: 1.613)

135. N. Ullah*, S. A. Qureshi, S. Anwar, A. Malik, E. Haslinger. Long chain cinnamoic acid esters from Daphne oleoides. Z. Naturforsch. B, 55b, 982-984, 2000 (IF: 1.115)

136. M. Riaz, N. Ullah, A. Mehmood, H. R. Nawaz, A. Malik*, N. Afza. Furanoid and furofuranoid lignans from Daphne oleoides. Z. Naturforsch. B, 55b, 1216-1220, 2000 (IF: 1.115)

137. H. R. Nawaz, M. Riaz, A. Malik*, P. Muhammad Khan, N. Ullah. Withanolides and alkaloid from Ajuga parviflora. J. Chem. Soc. Pak., 22, 138-141, 2000 (IF: 0.698)

138. N. Ullah, S. Ahmed, P. Mohammed, Z. Ahmed, E. Anis, H. R. Nawaz, A. Malik*. Coumarinolignoid glycoside from Daphne oleoides. Phytochemistry, 51, 103-105, 1999 (IF: 4.004)

139. P. Mohammad, S. Ahmed, H. R. Nawaz, N. Ullah, A. Malik*. New acetylated quinols from Ajuga parviflora. Fitoterapia, 70, 229-232, 1999 (IF: 3.204)

140. N. Ullah, S. Ahmed, E. Anis, P. Mohammad, H. R. Nawaz, A. Malik*. A Lignan from Daphne oleoides. Phytochemistry, 50, 147-149, 1999 (IF: 4.004)  

141. N. Ullah, Z. Ahmed, S. Ahmed, P. Mohammed, A. Malik*. A Pentacyclic triterpene from Daphne oleoides. Phytochemistry, 50, 839-841, 1999 (IF: 4.004)

142. S. Ahmed, A. Malik*, R. Yasmin, N. Ullah, W. Gul, P. Mohammed, H. R. Nawaz. Withanolides from Physalis peruviana. Phytochemistry, 50, 647-651, 1999 (IF: 4.004)  

143. E. Anis, G. Mustafa, S. Ahmed, N. Ullah, A. Malik*, N. Afza, Y. Badar. Sterols and sterol glycosides from Cuscuta reflexa. Nat. Prod. Sci., 5, 124-126, 1999 (IF: --)

144. N. Ullah, S. Ahmed, A. Malik*. A dicoumarin glycoside from Daphne oleoides. Phytochemistry, 51, 99-101, 1999 (IF: 4.004) 

145. E. Anis, G. Mustafa, N. Ullah, A. Malik*, N. Afza, Y. Badar. Phytochemical Studies on Cuscuta reflexa. Pakistan J. Sci. Ind. Res., 42, 170-172, 1999 (IF: --)  

146. N. Ullah, Z. Ahmed, S. Ahmed, P. Mohammed, A. Malik*. Dimeric guaianolides from Daphne oleoides. Phytochemistry, 51, 559-562, 1999 (IF: 4.004)  

147. P. Mohammed, S. Ahmed, H. R. Nawaz, N. Ullah, A. Malik*. New monoterpene glycosides from Paeonia emodi. Z. Naturforsch. B, 54b, 544-548, 1999 (IF: 1.115)

148. N. Ullah, S. Ahmad, A. Malik*. Phenylpropanoid glycoside from Daphne oleoides. Chem. Pharm. Bull., 47, 114-115, 1999 (IF: 1.903)

149. N. Ullah, S. Ahmed, P. Mohammed, H. R. Nawaz, A. Malik*. Chemical constituents of Daphne oleoides. Fitoterapia, 70, 214-215, 1999 (IF: 3.204) 

150. E. Anis, Z. Ahmed, G. Mustafa, N. Ullah, R. Z. Nadeem, A. Malik*, N. Afza. Long Chain Esters of Olean series from Cascuta reflexa. Fitoterapia, LXIX, 474-475, 1998 (IF: 3.204) 

151. N. Ullah, Z. Ahmed, E. Anis, A. Malik*. Phytochemical investigation of Daphne oleoides. Fitoterapia, LXIX, 280, 1998 (IF: 3.204)