1. Medicinal and Process Chemistry Division CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 22603 India
2. Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
3. Present address: Kolhan University Chaibasa Jharkhand. 833201 India
4. Present address: Process R & D, Sai Life Sciences Limited Hyderabad Telangana 500010 India