o-methylbenzenediazonium chloride

苯并三唑

4-methyl-N-[(4-methylphenyl)diazenyl]aniline

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

2,2'-dinitro-azobenzene-4,4'-disulfonic acid