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At higher sterol concentrations, campesterol (Camp) and brassicasterol (Bras) are less miscible and less effective than cholesterol (Chol) at ordering the hydrocarbon chains of the sterol-enriched fluid DPPC bilayers, overall, these alkyl side chain modifications generally reduce the ability of Chol to produce its characteristic effects on DPPC bilayer physical properties. 
Campesterol oxidation products have different antioxidant effects.
Campesterol oxidised derivatives and dihydrobrassicasterol have toxicity in U937 and HepG2 cells.
Dietary campest-5-en-3-one (campestenone), an oxidized derivative of campesterol, can activate PPAR alpha, promote energy consumption and significantly reduce visceral fat weight and the concentration of triacylglycerol in serum and liver of rats.
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The product could be supplied from milligrams to grams, up to kilograms
Whenever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20℃. Generally, these will be useable for up to two weeks.
analysis-method: HPLC-DAD or/and HPLC-ELSD
identification-method: Mass, NMR
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