1. Natural Product Chemistry Section, CSIR-North East Institute of Science and Technology, Naharlagun, Arunachal Pradesh, India
2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
3. Assam down town University, Guwahati, Assam, India
4. Department of Life Sciences, Dibrugarh University, Dibrugarh, India