Description Cholesterol, 99.2%, from Wool Grease, 125g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) Off-white Appearance (Form) Fine powder Assay (GC) 99.2% Assay (as cholesterol) 95.0% Assay (as Sterol) 99.0% Acidity 0.1ml Density 1.067 Identification Passes Loss on drying <0.1% Melting Point 147-150 °C Optical Rotation (c=, dioxane) -35° Residue on Ignition <0.1% Solubility in Alcohol Passes Source Wool grease CAS: 57-88-5 FORMULA: C27H46O