1. Department of Pharmaceutical Analysis, Shri Vishnu College of Pharmacy (Autonomous), Bhimavaram - 534201, A.P., India.
2. Department of Pharmaceutical Analysis, A K R G College of Pharmacy, Nallajerla - 534112, A.P., India.
3. Department of Chemistry, Vijaya Teja Degree College, Addanki - 523201, A.P., India.