CAS 8003-59-6 appears in our catalog under these names: Acid Red 9, Acid Red 9, 6(or 7)-[(2-Hydroxy-1-naphthalenyl)azo]-1-naphthalenesulfonic acid monosodium salt. Offered by: GLPBio, TCI, Chemat, MedChemExpress. Available pack sizes: 25g, 5g, 1g, Get quote.