Simhadri NVV, Bhaskara Rao K, Vijaya Kumar N, Siva Rao T and Nageswara Rao G 2015. Influence of Dielectric constant on Protonation Equilibria of Glutathione in aqueous solutions of propylene glycol and acetonitrile. International Journal of Pharmaceutics and Drug Analysis. 3, 2 (Feb. 2015), 19-26.