(2E)-4-(4-溴苯基)-4-氧代丁2-烯酸

4-(4-bromophenyl)-4-oxobut-2-enoyl chloride

trans-methyl-4-(4-bromophenyl)-4-oxobut-2-enoate

β-(4-bromobenzoyl)acrylic acid

4-oxo-4-(4-bromo-phenyl)-cis-crotonic acid methyl ester