CAS 481-18-5 appears in our catalog under these names: α–Spinasterol, Alpha-Spinasterol, >95% (HPLC), a-Spinasterol, >95% (HPLC), α-Spinasterol/ 99.58% (existing batch purity), a-Spinasterol. Offered by: GLPBio, TRC, TargetMol, Biosynth, Chemat. Available pack sizes: 5mg, 1mg, 25mg, 10mg, 50mg, 100mg, 1 mg, 5 mg.