2,3-双(苄氧基)苯甲酸

8-hydroxy-2-oxochromene-3-carbonitrile

ethyl 8-hydroxy-2-imino-2H-chromene-3-carboxylate

3-羟基-2-异丙氧基苯甲醛

6-(1,3-dihydrobenzimidazol-2-ylidene)-2-hydroxycyclohexa-2,4-dien-1-one