1. H. E. J. Research Institute of Chemistry
2. International Center for Chemical and Biological Sciences
3. University of Karachi
4. Karachi-75270
5. Pakistan
6. Department of Chemistry
7. Forman Christian College
8. A Chartered University
9. Lahore
10. Science and Arts College
11. Rabigh Campus
12. King Abdulaziz University
13. Jeddah