ethyl 4-chlorocyclohex-3-ene-1-carboxylate

(8CI,9CI)-3,4-二氢嘧啶并[1,2-a]苯并咪唑-2(1H)-酮

ethyl 3-imidazol-1-ylpropanoate

3-(1-甲基-1H-吡咯-2-基)-丙烯酸乙酯

ethyl 1-hydroxy-4-oxoquinoline-3-carboxylate