CAS: 8005-03-6 Molecular Formula: C22H14N6Na2O9S2 Molecular Weight (g/mol): 616.49 InChI Key: HKBVRFLHNUEVRO-HMDKGIQMSA-L Synonym: amido black 10b,acid black 1,buffalo black nbr,naphthol blue black,aniline blue black, tech,nigrosine water soluble,4-amino-5-hydroxy-3-4-nitrophenyl azo-6-phenylazo naphthalene-2,7-disulphonic acid, sodium salt,2,7-naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-4-nitrophenyl azo-6-phenylazo-, sodium salt,3-4-nitrophenylazo-4-amino-5-oxo-6-2-phenylhydrazono-5,6-dihydro-2,7-naphthalenedisulfonic acid disodium salt,disodium 3e-5-amino-6-4-nitrophenyl diazenyl-4-oxo-3-phenylhydrazinylidene naphthalene-2,7-disulfonate PubChem CID: 44134531 IUPAC Name: disodium;4-amino-3-[(4-nitrophenyl)diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate SMILES: C1=CC=C(C=C1)NN=C2C(=CC3=CC(=C(C(=C3C2=O)N)N=NC4=CC=C(C=C4)[N+](=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]