2,2-dimethyl-3,4-dihydrochromene-4,7-diol

3-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxyphenol

3-(4-溴苯基)-7-羟基-4H-苯并吡喃-4-酮

1,3,8-三羟基-11H-苯并呋喃并[2,3-b][1]苯并吡喃-11-酮

7-羟基-4-氧代-4H-1-苯并吡喃-3-羧醛