1. Centre for Advance Studies in Chemistry, Organic Synthesis Laboratory, North-Eastern Hill University, Shillong, Meghalaya, India
2. Department of Chemistry, Sankardev College, Shillong, Meghalaya, India
3. Centre for Advance Studies in Chemistry, Photo Reaction Laboratory, North-Eastern Hill University, Shillong, Meghalaya, India
4. Department of Zoology, North-Eastern Hill University, Shillong, Meghalaya, India