CAS 312500-56-4 appears in our catalog under these names: 2-[1-(1,1-Dioxido-1,2-benzisothiazol-3-yl)hydrazino]ethanol, 95%, 3-(1-(2-Hydroxyethyl)hydrazinyl)benzo(d)isothiazole 1,1-dioxide, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 1g, 5g.