DIMETHYL 2-CHLORO-3-OXO-BUTANEDIOATE, chloro-oxalacetic acid dimethyl ester, EINECS 252-344-8, Dimethyl chlorooxosuccinate, Butanedioic acid,2-chloro-3-oxo-,1,4-dimethyl ester, Chlor-oxalessigsaeure-dimethylester, Dimethylchlorooxaloacetat, Dimethyl-1-chloro-2-oxosuccinat bzw. Dimethyl chlorohydroxyfumarat