1(2H)-Quinoxalineacrylic acid, 3,4-dihydro-alpha-cyano-, ethyl ester 2-Propenoic acid, 2-cyano-3-(3,4-dihydro-1(2H)-quinoxalinyl)-, ethyl ester (9CI) 5-23-06-00026 (Beilstein Handbook Reference) 6687-89-4 BRN 0547976 NSC 90843 alpha-Cyano-3,4-dihydro-1(2H)-quinoxalineacrylic acid ethyl ester