1. Yueyang Vocational Technical College; Yueyang China
2. Department of Chemistry; Faculty of Science; Cairo University; Giza Egypt
3. Department of Chemical Engineering; Faculty of Engineering; The British University in Egypt; El-Shorouk City Egypt
4. Research Unit; Saco Pharm. Co.; 6th October City Egypt
5. Department of Chemistry; College of Science; King Saud University; Riyadh Saudi Arabia