CAS 4321-69-1 appears in our catalog under these names: Acid Violet 7, 5-Acetamido-3-((4-acetamidophenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonic acid, sodium salt, Acid Violet 7. Offered by: GLPBio, Chemat, MedChemExpress. Available pack sizes: 250g, 50g, 50 mg, 100 mg.