CAS 88398-46-3 appears in our catalog under these names: 5-Chloro-1,3-dimethyl-1h-pyrazole-4-sulfonamide, 95%, 5-Chloro-1,3-dimethyl-1H-pyrazole-4-sulfonamide , 5-Chloro-1,3-dimethyl-1H-pyrazole-4-sulfonamide. Offered by: Combi-blocks, Thermo Scientific (Alfa Aesar), Fluorochem. Available pack sizes: 250mg, 1g, 250mg , 5g.