6,7-二氢-4(5H)-苯并呋喃酮

2-氧代环戊羧酸烯丙酯

2-ethoxy-3,5,6,7-tetrahydro-2H-1-benzofuran-4-one

2-氯-3-羟基-2-环己烯-1-酮

N-(4-nitrophenyl)-2-oxocyclopentane-1-carboxamide