1. Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514 Egypt;
2. Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Nahda University, Beni-Suef, 62514 Egypt; and
3. Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11668 Egypt.