1,1-Ethanedicarboxylic acid 2-Methylmalonic acid 4-02-00-01932 (Beilstein Handbook Reference) 516-05-2 AI3-19472 BRN 1756084 EINECS 208-219-5 Isosuccinic acid METHYL MALONIC ACID Malonic acid, methyl- Methylmalonic acid NSC 25201 Propanedioic acid, methyl- (9CI)