3-hydroxy-2-(4-chlorophenyl)acrylic acid ethyl ester

反式-4-溴肉桂酸乙酯

ethyl (Z)-3-(4-bromophenyl)-prop-2-enoate

4-(4-氟苯基)-3-氧代丁酸乙酯

2-diazonio-1-ethoxy-6-hydroxy-1-oxohept-2-en-3-olate