CAS 4991-65-5 appears in our catalog under these names: Tioxolone/ 95.9% (existing batch purity), Tioxolone, 6-Hydroxy-1,3-benzoxathiol-2-one, Tioxolone 98%, 6-HYDROXY-1,3-BENZOXATHIOL-2-ONE, 98+%. Offered by: TargetMol, GLPBio, Biosynth, Ambeed, Sigma-Aldrich. Available pack sizes: 1g, 5g, 10g, 50mg, 100g, 100mg, 250mg, 25g.