Description_x000D_ Application_x000D_ 5α-Cholestane was used as standard in cholesterol analysis by GC and HPLC._x000D_ Packaging_x000D_ 1, 5 g in glass bottle_x000D_ 100 mg in poly bottle_x000D_ Biochem/physiol Actions_x000D_ 5α-Cholestane is a sterol produced endogenously from cholesterol and has been isolated from human feces. It is derived from cholesterol by the action of intestinal microorganisms. Derivatives of 5α-cholestane in plants are called Brassinosteroids that selectively activate the PPI3K/Akt pathway._x000D_ Preparation Note_x000D_ 5α-Cholestane yields clear to slightly hazy, colorless to faint yellow solution in chloroform at 50 mg/ml.