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3β-hydroxy-5,24-cholestadiene, powder

24-dehydrocholesterol; 5,24-cholestadien-3β-ol; 110798
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:


>99% (TLC)




pkg of 1 × 10 mg (700060P-10mg)
pkg of 1 × 5 mg (700060P-5mg)


Avanti Polar Lipids 700060P

shipped in

dry ice

storage temp.




InChI key


General description

Desmosterol lacks a double bond between C24 and C25 compared to cholesterol. It is present in the membrane of spermatozoa and astrocytes and is the major brain sterol.


Desmosterol has been used as a sterol to test its interaction with human protein Mincle and as an internal standard in ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). It may be used as in the preparation of lipid monolayers.

Biochem/physiol Actions

Desmosterol is a precursor of cholesterol in the Bloch pathway and the enzyme 24-dehydrocholesterol reductase catalyzes this step. Desmosterol accumulates during impairment of 24-dehydrocholesterol reductase enzyme thereby leading to desmosterolosis. Desmosterol is a liver X receptor (LXR) agonist . It is a potential therapeutic target for treating the neurodegenerative disorder. Desmosterol regulates inflammatory signaling in macrophages.


5 mL Amber Glass Screw Cap Vial (700060P-5mg)
5 mL Amber Glass Screw Cap Vial (700060P-10mg)

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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More Documents

Quotes and Ordering

Saara Vainio et al.
The Journal of biological chemistry, 281(1), 348-355 (2005-10-27)
Desmosterol is an immediate precursor of cholesterol in the Bloch pathway of sterol synthesis and an abundant membrane lipid in specific cell types. The significance of the difference between the two sterols, an additional double bond at position C24 in
María de Las Mercedes Carro et al.
Biochimica et biophysica acta. Biomembranes, 1862(9), 183357-183357 (2020-05-18)
Ram sperm are particularly sensitive to freeze-thawing mainly due to their lipid composition, limiting their use in artificial insemination programs. We evaluated the extent of cholesterol and desmosterol incorporation into ram sperm through incubation with increasing concentrations of methyl-β-cyclodextrin (MβCD)-sterol
Phillip A Wages et al.
Journal of lipid research, 59(10), 1916-1926 (2018-08-09)
Regulating blood cholesterol (Chol) levels by pharmacotherapy has successfully improved cardiovascular health. There is growing interest in the role of Chol precursors in the treatment of diseases. One sterol precursor, desmosterol (Des), is a potential pharmacological target for inflammatory and
Josi Herron et al.
Current protocols in toxicology, 78(1), e65-e65 (2018-10-16)
Cholesterol and cholesterol-derived oxysterols are critical for embryonic development, synapse formation and function, and myelination, among other biological functions. Indeed, alterations in levels of cholesterol, sterol precursors, and oxysterols result in a variety of developmental disorders, emphasizing the importance of
Maurice Jansen et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 27(3), 865-870 (2012-12-12)
The brain is the most cholesterol-enriched tissue in the body. During brain development, desmosterol, an immediate precursor of cholesterol, transiently accumulates up to 30% of total brain sterols. This massive desmosterol deposition appears to be present in all mammalian species

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