Description; General description; Cholesterol is one of the important constituent of all membranes. It is made up of a hydrophobic, planar, a polar hydroxyl group, fused-ring nucleus and a short hydrocarbon tail.; Application; Cholesterol-PEG 600 has been used to evaluate its ability to induce apoptosis in vascular smooth muscle cells. It has also been used to restore cholesterol following depletion by methyl β-cyclodextrin.; Packaging; 1, 5 g in serum bottle; 250, 500 mg in serum bottle; Biochem/physiol Actions; Cholesterol acts as an antecedent of steroid hormones. It plays a key role in fetal growth and in brain development.; Physical form; semisolid to solid; Preparation Note; Prepared by method of Proksch, G.J., and Bonderman, D.P., Clin. Chem., 24, 1924 (1978).