1. Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant University of Agriculture and Technology, Pantnagar-263 145 Uttaranchal, India
2. Department of Pharmacology and Toxicology College of Veterinary and Animal Sciences, G.B. Pant University of Agriculture and Technology, Pantnagar-263 145 Uttaranchal, India
3. Department of Chemistry, Kumaun University, Nainital, 263 002, Uttaranchal, India