ethyl 3-(2-hydroxy-4-methoxyphenyl)prop-2-enoate

3-氰基-7-甲氧基香豆素

ethyl 7-methoxy-2-oxochromene-3-carboxylate

7,8-dimethoxy-5-methylchromen-2-one

3-乙酰基-7-羟基-苯并吡喃-2-酮