4-hydroxy-8-methyl-7-phenylmethoxychromen-2-one

4′-乙氧基-2′-羟基-3′-甲基苯乙酮

7-ethoxy-8-methyl-4-piperazin-1-ylchromen-2-one

4-hydroxy-7-methoxy-8-methylchromen-2-one