CAS 89139-48-0 appears in our catalog under these names: 3-(3-Oxo-2,3-dihydro-1,2-benzothiazol-2-yl)propanoic acid, 95%, 3-(3-Oxobenzo(d)isothiazol-2(3H)-yl)propanoic acid, 97%, 3-(3-Oxo-2,3-dihydro-1,2-benzothiazol-2-yl)propanoic acid, 3-Oxo-1,2-benzisothiazole-2(3H)-propanoic acid, 95%, 95%. Offered by: Combi-blocks, AmBeed, Biosynth, Chemat, Fluorochem. Available pack sizes: 250mg, 5g, 1g, 10g, 0,5g, 100mg, 500mg.