1. Department of Chemistry, Sri Padmavathi Degree and PG College, Tirupati, Andhra Pradesh, India
2. Chemical Research & Development, API Division, Micro Labs Ltd., Jigani-Bommasandra Link Road, Bangalore, Karnataka, India
3. Deparment of Chemistry, Bapatla Engineering College, Bapatla, Andhra Pradesh, India
4. Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India