CAS 561-63-7 appears in our catalog under these names: 19-Hydroxy Cholesterol, >95% (HPLC), 19-hydroxy Cholesterol, 19–hydroxy Cholesterol, 19-Hydroxy cholesterol, 99.0%. Offered by: TRC, TargetMol, GLPBio, Biosynth, Chemat. Available pack sizes: 10mg, 1mg, 5mg, 2mg, 25mg, 1 mg.