2-Propenoic acid, 2-cyano-3-(2-thienyl)-, ethyl ester (9CI) 2-Thiopheneacrylic acid, alpha-cyano-, ethyl ester 31330-51-5 5-18-07-00092 (Beilstein Handbook Reference) BRN 0163675 NSC 52714 alpha-Cyano-2-thiopheneacrylic acid ethyl ester