17920-23-9 4-02-00-02303 (Beilstein Handbook Reference) BRN 1103668 Diethyl (mono) propargyl malonate Diethyl propargylmalonate MALONIC ACID, 2-PROPYNYL-, DIETHYL ESTER Malonic acid, 2-(2-propynyl)-, diethyl ester NSC 28575 Propanedioic acid, 2-propynyl-, diethyl ester (9CI) USAF KF-9