1. Department of Chemistry, University of North Bengal, Darjeeling 734013, India
2. Department of Chemistry, Government General Degree College at Kushmandi, Dakshin Dinajpur, Kushmandi 733121, India
3. Nanobiology and Phytotherapy Laboratory, Department of Botany, University of North Bengal, Siliguri 734013, West Bengal, India
4. CSIR-Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
5. Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak 484886, Madhya Pradesh, India
6. Department of Pharmaceutical Technology, University of North Bengal, Siliguri 734013, West Bengal, India