Synonyms: Butanedioicacid, [(dimethoxyphosphinothioyl)thio]- (9CI); Succinic acid, mercapto-,O,O-dimethyl phosphorodithioate (6CI); Succinic acid, mercapto-, S-ester withO,O-dimethyl phosphorodithioate (7CI,8CI); Phosphorodithioic acid, O,O-dimethylester, S-ester with mercaptosuccinic acid (8CI);2-[(Dimethoxyphosphorothioyl)sulfanyl]succinic acid; Malathion diacid;Malathiondicarboxylic acid; O,O-Dimethyl S-(1,2-dicarboxyethyl)phosphorodithioate