CAS 12220-28-9 appears in our catalog under these names: Sodium 3–((6–((2,6–dimethylphenyl)amino)–9–(2–sulfonatophenyl)xanthylium–3–yl)amino)–2,4–dimethylbenzenesulfonate, Acid Red 289. Offered by: GLPBio, TCI, Chemat. Available pack sizes: 25g, 1g, 5g.