2-chloro-1-(4-hydroxy-3-methoxyphenyl)ethanone

6-hydroxy-5-nitrosonaphthalene-2-sulfonic acid

2-(1H-pyridin-2-ylidene)indene-1,3-dione

4-(4-aminoanilino)phenol

5-(二乙氨基)-2-(亚硝基苯酚)