2,3-Dihydro-2-methoxy-4H-1-benzopyran-4-one

4-羟基-2-氧代-2H-色烯-3-甲醛

2-(5-异恶唑基)苯酚

2-(2-hydroxybenzoyl)xanthen-9-one

6-[5-[hydroxy-[3-(6-oxocyclohexa-2,4-dien-1-ylidene)-1,2-oxazolidin-5-yl]amino]-1,2-oxazolidin-3-ylidene]cyclohexa-2,4-dien-1-one