ethyl 3-chloro-2-oxocycloheptane-1-carboxylate

(E)-ethyl 3-cyano-3-phenylacrylate

ethyl 3-cyano-3-phenylprop-2-enoate

ethyl 3,4,4,5,5,6,6,7,7,8,8,8-dodecafluorooct-2-enoate

alpha-丁基-beta-氧代苯丙酸乙酯