2,6-二甲基-P-苯二胺

6-oxo-3-[(3-sulfophenyl)hydrazinylidene]cyclohexa-1,4-diene-1-carboxylic acid

3-[2-(3-formyl-4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]benzenesulfonic acid

1,3-苯二磺酸

2,3-二甲基-P-苯二胺