0-09-00-00594 (Beilstein Handbook Reference) 2-Chlorocinnamic acid 2-Propenoic acid, 3-(2-chlorophenyl)- (9CI) 3-(2-Chlorophenyl)-2-propenoic acid 3752-25-8 BRN 1365198 CINNAMIC ACID, o-CHLORO- EINECS 223-154-2 NSC 4792 o-Chlorocinnamic acid