ethyl 2-(2-phenylethynyl)cyclopentene-1-carboxylate

ethyl (1R,2R)-2-[[(1R)-1-phenylethyl]amino]cyclopentane-1-carboxylate,hydrochloride

ethyl 2-oxo-1-(3-oxocyclohexyl)cyclopentane-1-carboxylate

ethyl 1-(3-methoxy-3-oxopropyl)-2-oxocyclopentane-1-carboxylate

7-羟基-2,3-二氢-1H-环戊并[c]苯并吡喃-4-酮