CAS: 23647-14-5 Molecular Formula: C16H10N2Na3O11S3+ Molecular Weight (g/mol): 571.408 MDL Number: MFCD00003952 InChI Key: LSAWBVPBZOEGOT-UHFFFAOYSA-L Synonym: spadns,2,7-naphthalenedisulfonic acid, 4,5-dihydroxy-3-4-sulfophenyl azo-, trisodium salt,trisodium 4,5-dihydroxy-3-e-2-4-sulfonatophenyl diazen-1-yl naphthalene-2,7-disulfonate,2,7-naphthalenedisulfonic acid, 4,5-dihydroxy-3-2-4-sulfophenyl diazenyl-, sodium salt 1:3,2-p-sulfophenylazo-1,8-dihydroxy-3,6-naph-thalenedisulfonic acid PubChem CID: 73658865 IUPAC Name: trisodium;5-hydroxy-4-oxo-3-[(4-sulfophenyl)hydrazinylidene]naphthalene-2,7-disulfonate SMILES: C1=CC(=CC=C1NN=C2C(=CC3=CC(=CC(=C3C2=O)O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)O.[Na+].[Na+].[Na+]