1. Department of Chemistry College of Science Princess Nourah Bint Abdulrahman University Riyadh 11671 Saudi Arabia
2. Department of Pharmaceutical Chemistry Drug Exploration & Development Chair (DEDC) College of Pharmacy King Saud University Riyadh 11451 Saudi Arabia
3. Peptide Chemistry Department Chemical Industries Research Division National Research Centre 12622- Dokki Cairo Egypt
4. Egyptian Propylene and Polypropylene Company Port Said 42511 Egypt
5. Chemistry Department Faculty of Science Damietta University Damietta 34517 Egypt
6. Basic Science Department Higher Institute of Engineering and Technology Damietta 34517 Egypt