Synonyms: 1,2-Cyclobutanedicarboxylicacid, monomethyl ester, (1R,2S)-rel- (9CI); 1,2-Cyclobutanedicarboxylic acid,monomethyl ester, cis-; (?à)-cis-Cyclobutane-1,2-dicarboxylic acid monomethyl ester; NSC 134896;cis-(2-Methoxycarbonyl)cyclobutanecarboxylic acid;cis-Cyclobutane-1,2-dicarboxylic acid monomethyl ester