Synonyms: 3-Pyrrolidinesulfonicacid,1-[[[4-[(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)methyl]cyclohexyl]carbonyl]oxy]-2,5-dioxo-,sodium salt (9CI);4-[(2,5-Dihydro-2,5-dioxo-1H-pyrrol-1-yl)methyl]-Cyclohexanecarboxylic acid 2,5-dioxo-3-sulfo-1-pyrrolidinyl ester sodium salt (1:1);