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Key Documents

H9384

Sigma-Aldrich

22(R)-Hydroxycholesterol

≥98%

Synonym(s):

22α-Hydroxycholesterol, 5-Cholestene-3β,22(R)-diol, 5-Cholestene-3β,22[R]-diol

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About This Item

Empirical Formula (Hill Notation):
C27H46O2
CAS Number:
Molecular Weight:
402.65
MDL number:
UNSPSC Code:
12352211
eCl@ss:
39023139
PubChem Substance ID:
NACRES:
NA.77

Quality Level

Assay

≥98%

form

powder

shipped in

ambient

storage temp.

room temp

SMILES string

[H][C@@]12CC=C3C[C@@H](O)CC[C@]3(C)[C@@]1([H])CC[C@]4(C)[C@H](CC[C@@]24[H])[C@H](C)[C@H](O)CCC(C)C

InChI

1S/C27H46O2/c1-17(2)6-11-25(29)18(3)22-9-10-23-21-8-7-19-16-20(28)12-14-26(19,4)24(21)13-15-27(22,23)5/h7,17-18,20-25,28-29H,6,8-16H2,1-5H3/t18-,20-,21-,22+,23-,24-,25+,26-,27+/m0/s1

InChI key

RZPAXNJLEKLXNO-GFKLAVDKSA-N

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Application

Bovine aortic endothelial cells were treated with 22(R)-Hydroxycholesterol to study the effects on production of free radicals and in studies related to fatty acid metabolism.

Biochem/physiol Actions

22(R)-Hydroxycholesterol is an intermediate of the pregnenolone synthesis pathway from cholesterol. It reported has neuroprotective properties and protects the neurons against β-amyloid-induced cell death. 22(R)-Hydroxycholesterol acts as the ligand of liver X receptors that act as sensors of sterol concentration and regulates the fatty acid metabolism.

Preparation Note

22(R)-Hydroxycholesterol yield clear, colorless solution in chloroform.

related product

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number

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  1. How does the storage temperature relate to shipping conditions?

    The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment. See Shipping and Storage for more information.

  2. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

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    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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  5. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  6. What is product H9384, 22(R)-Hydroxycholesterol, soluble in?  

    Product H9384, 22(R)-Hydroxycholesterol, is reported to be soluble in chloroform (20mg/ml), absolute ethanol (20mg/ml), DMSO (0.1mg/ml) and dimethylformamide (2mg/ml).  Sigma-Aldrich tests solubility of this compound in chloroform at a concentration of 20mg/ml. 

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A Chawla et al.
Science (New York, N.Y.), 294(5548), 1866-1870 (2001-12-01)
Cholesterol, fatty acids, fat-soluble vitamins, and other lipids present in our diets are not only nutritionally important but serve as precursors for ligands that bind to receptors in the nucleus. To become biologically active, these lipids must first be absorbed
Cynthia Hong et al.
Journal of lipid research, 52(3), 531-539 (2010-12-29)
Ligand activation of liver X receptors (LXRs) has been shown to impact both lipid metabolism and inflammation. One complicating factor in studies utilizing synthetic LXR agonists is the potential for pharmacologic and receptor-independent effects. Here, we describe an LXR gain-of-function
Lourdes Cruz-Garcia et al.
Comparative biochemistry and physiology. Part A, Molecular & integrative physiology, 160(2), 125-136 (2011-06-04)
The liver X receptor (LXR) has recently been described in salmonids. In mammals, this receptor is already known as a transcriptional factor that regulates diverse aspects of cholesterol, fatty acid and carbohydrate metabolism in various tissues, including muscle. Here we
Zhi-Xing Yao et al.
Journal of neurochemistry, 83(5), 1110-1119 (2002-11-20)
22R-hydroxycholesterol, a steroid intermediate in the pathway of pregnenolone formation from cholesterol, was found at lower levels in Alzheimer's disease (AD) hippocampus and frontal cortex tissue specimens compared to age-matched controls. beta-Amyloid (Abeta) peptide has been shown to be neurotoxic
Jingsong Ou et al.
Circulation research, 97(11), 1190-1197 (2005-10-15)
Previously we showed L-4F, a novel apolipoprotein A-I (apoA-I) mimetic, improved vasodilation in 2 dissimilar models of vascular disease: hypercholesterolemic LDL receptor-null (Ldlr(-/-)) mice and transgenic sickle cell disease mice. Here we determine the mechanisms by which D-4F improves vasodilation

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