2-Diazo-1-naphthoquinones-5-sulfonyl Chloride
3-bis(4-nitrophenylamino-diazo)benzene
4-nitro-4’-fluorophenyl diazo-amino-azobenzene
4-nitro-4′-fluorophenyl diazo-amino-azobenzene
4-Nitro-4′-fluorophenyl-diazo-amino-azobenzene
5-Dimethyl-2-thiazolyl-azolyl-diazo-amino-azobenzene
diazo coupling reaction