1. Department of Pharmaceutical Chemistry, Indo-Soviet Friendship (I.S.F.) College of Pharmacy, Moga, Punjab, India,
2. Faculty of Pharmacy, Punjab Technical University, Jalandhar, Kapurthala, India,
3. Department of Pharmaceutical Chemistry, Shivalik College of Pharmacy, Nangal, Dist. Rupnagar, Punjab, India, and
4. Department of Pharmaceutical Chemistry, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India