1. Department of Chemistry, Government Post Graduate College Dhaliara, Himachal Pradesh University, Shimla, India
2. Department of Chemistry, School of Sciences, Indira Gandhi National Open University, New Delhi, India
3. Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
4. CSIR, Academy of Scientific and Innovative Research, New Delhi, India