CAS 72559-06-9 appears in our catalog under these names: Rifabutin, 95%, Rifabutin, Rifabutin, >95% (HPLC), Rifabutin/ 99.27% (existing batch purity), Rifabutin, >98.0%(HPLC). Offered by: Combi-blocks, Chemat Brand, TRC, TargetMol, GLPBio. Available pack sizes: 1g, 250mg, 5g, 100mg, on request, 25mg, 500mg, 50mg.