(2-chloropyridin-3-yl)-(2,4,6-trihydroxyphenyl)methanone

3,5-二甲氧基苯酚

2-(3',5'-dimethoxyphenoxy)nicotinic acid

6,8-dimethoxy-5H-(1)benzopyrano(2,3-b)pyridin-5-one

6-hydroxy-8-methoxy-5H-(1)benzopyrano(2,3-b)pyridin-5-one