1. Department of Chemistry, R.D.S. College, B. R. A. Bihar University, Muzaffarpur, India
2. Department of Chemistry, Motilal Nehru College, University of Delhi, Delhi, India
3. Department of Chemistry, L. S. College, B. R. A. Bihar University, Muzaffarpur, India
4. University Department of Chemistry, B. R. A. Bihar University, Muzaffarpur, India
5. Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India