1. ; Department of Pharmaceutical Chemistry College of Pharmacy; King Saud University; P.O. Box 2457 Riyadh 11451 Saudi Arabia
2. ; Department of Pharmaceutics, College of Pharmacy; King Saud University; P.O. Box 2457 Riyadh 11451 Saudi Arabia
3. ; Applied Sciences Section, University Polytechnic, Faculty of Engineering and Technology; Aligarh Muslim University; Aligarh 202002 India