4-(4-aminoanilino)phenol

4-氯-2-(2,4-二硝基苯基氨基)苯酚

4,5-二氨基-1-萘磺酸

9,10-二氧代-9,10-二氢蒽-2-甲醛

1-(2,3,4,6-tetrahydroxyphenyl)ethanone