.beta.-Cholestanol 3.beta.-Hydroxy-5.alpha.-cholestane 3.beta.-Hydroxycholestane 5.alpha.-Cholestan-3.beta.-ol 5.alpha.-Cholestanol 5.alpha.-Dihydrocholesterol 80-97-7 Cholestan-3-ol, (3.beta.,5.alpha.)- Cholestan-3.beta.-ol Cholestanol Dihydrocholesterin Dihydrocholesterol NSC18188 Zymostanol