2-Chloroacrylic acid ethyl ester 2-Propenoic acid, 2-chloro-, ethyl ester 4-02-00-01482 (Beilstein Handbook Reference) 687-46-7 ACRYLIC ACID, 2-CHLORO-, ETHYL ESTER BRN 1745265 EINECS 211-693-6 Ethyl 2-chloroacrylate Ethyl alpha-chloroacrylate NSC 24149