1. Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy Al‐Azhar University, Assiut Branch Assiut Egypt
2. Analytical Chemistry Department, Faculty of Pharmacy Minia University Minia Egypt
3. Department of Pharmaceutics College of Pharmacy, Umm Al‐Qura University Makkah Saudi Arabia
4. Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy Menoufia University Shebin El‐Kom Egypt