.beta.-Sitostanol .beta.-Sitosterol, dihydro- 5.alpha.-Stigmastan-3.beta.-ol 83-45-4 Dihydro-.beta.-sitosterol Dihydrositosterin Dihydrositosterol Fucostanol NSC49081 Spinastanol Stigmastan-3-ol, (3.beta.,5.alpha.)- Stigmastanol