The molecule is a peptide anion obtained by deprotonation of the carboxy and sulfinate groups and protonation of the amino group of glutathione S-sulfinate; major species at pH 7.3. It derives from a glutathionate(1-). It is a conjugate base of a glutathione S-sulfinate.
(2S)-2-azaniumyl-5-[[(2R)-1-(carboxylatomethylamino)-1-oxo-3-sulfinatosulfanylpropan-2-yl]amino]-5-oxopentanoate