Synonyms: Butanedioicacid, [(2-amino-2-carboxyethyl)thio]- (9CI); Succinic acid,(2-amino-2-carboxyethylmercapto)- (4CI); Succinic acid,[(2-amino-2-carboxyethyl)thio]- (7CI); Cysteine, S-(1,2-dicarboxyethyl)-;S-(1,2-Dicarboxyethyl)-L-cysteine; S-(1,2-Dicarboxyethyl)cysteine; Succinicacid, [(2-amino-2-carboxyethyl)thio]-, stereoisomer