21633-77-2 3-03-00-01378 (Beilstein Handbook Reference) AI3-19315 BRN 1789421 Diethyl propionyl malonate Diethyl propionylmalonate MALONIC ACID, PROPIONYL-, DIETHYL ESTER NSC 15401 Propanedioic acid, (1-oxopropyl)-, diethyl ester (9CI) Propionylmalonic acid diethyl ester