CAS 6586-05-6 appears in our catalog under these names: Basic Blue 24, New Methylene Blue N, zinc chloride double salt, pure, NEW METHYLENE BLUE N, ZINC CHLORIDE &, Phenothiazin-5-ium, 3,7-bis(ethylamino)-2,8-dimethyl-, chloride, compd. with zinc chloride (ZnCl2) (1:x:x). Offered by: TCI, Thermo Scientific (Acros), Sigma-Aldrich, Chemat. Available pack sizes: 5g, 25g, 10g, 250mg, 1g.