2,7-Naphthalenedisulfonic acid, 4-[(3,5-dimethylphenyl)azo]-3-hydroxy- is a chemical compound registered under CAS number 89117-41-9, with the molecular formula C18H16N2O7S2 and a molecular weight of about 436.45 g/mol. ProvideChemicals supplies 2,7-Naphthalenedisulfonic acid, 4-[(3,5-dimethylphenyl)azo]-3-hydroxy- for laboratory research and bulk production; product code 459727. Send an inquiry for purity, packaging, price and lead time.