The molecule is dizwitterionic form of glutathione amide disulfide having both carboxy groups in anionic form and both amino groups protonated; major species at pH 7.3. It is an amino acid zwitterion and an organic disulfide. It is a tautomer of a glutathione amide disulfide.
(2S)-5-[[(2R)-1-[(2-amino-2-oxoethyl)amino]-3-[[(2R)-3-[(2-amino-2-oxoethyl)amino]-2-[[(4S)-4-azaniumyl-4-carboxylatobutanoyl]amino]-3-oxopropyl]disulfanyl]-1-oxopropan-2-yl]amino]-2-azaniumyl-5-oxopentanoate