18144-62-2 2H-1-BENZOPYRAN-3-CARBOXAMIDE, N,N-DIETHYL-2-OXO- 4-18-00-05572 (Beilstein Handbook Reference) BRN 0216665 Coumarin-3-carboxylic acid diethylamide N,N-Diethyl-2-oxo-2H-1-benzopyran-3-carboxamide N,N-Diethyl-3-coumarincarboxamide