CAS 207569-02-6 appears in our catalog under these names: 1，5–Naphthalenedisulfonic acid disodiuM salt hydrate, 1,5-Naphthalenedisulfonic acid disodium hydrate, 1,5-NAPHTHALENEDISULFONIC ACID, DISODIUM, 1,5-Naphthalenedisulphonic acid disodium salt. Offered by: GLPBio, Biosynth, Sigma-Aldrich, Chemat. Available pack sizes: 250g, 1kg, 10g, 50g.