CAS 876403 appears in our catalog under these names: 2-Butyl-1,2-benzisothiazolin-3-one/ 98.34% (existing batch purity), Topiramate Impurity 6, Topiramate EP Impurity B, Topiramate Impurity 2 (Topiramate EP Impurity B), 2,3:4,5-Bis-O-(1-methylethylidene)-Beta-D-fructopyranose 1-(((diethylamino)carbonyl)sulfamate), >95% (HPLC). Offered by: TargetMol, Chemat Brand, Hubei YoungXin, TRC, Mikromol. Available pack sizes: 1mg, 5mg, 10mg, 25mg, 50mg, 100mg, 500mg, on request.