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C0289

Sigma-Aldrich

Cholesteryl linoleate

≥98% (HPLC; detection at 205 nm)

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Synonym(s):
3β-Hydroxy-5-cholestene 3-linoleate, 5-Cholesten-3β-ol 3-linoleate, Cholesteryl 9,12-octadecadienoate, Cholesteryl octadecadienoate
Empirical Formula (Hill Notation):
C45H76O2
CAS Number:
Molecular Weight:
649.08
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.77

biological source

synthetic (organic)

Quality Level

Assay

≥98% (HPLC; detection at 205 nm)

form

powder

functional group

ester

shipped in

ambient

storage temp.

−20°C

SMILES string

CCCCC\C=C/C\C=C/CCCCCCCC(=O)O[C@H]1CC[C@]2(C)[C@H]3CC[C@]4(C)[C@H](CC[C@H]4[C@@H]3CC=C2C1)[C@H](C)CCCC(C)C

InChI

1S/C45H76O2/c1-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-25-43(46)47-38-30-32-44(5)37(34-38)26-27-39-41-29-28-40(36(4)24-22-23-35(2)3)45(41,6)33-31-42(39)44/h11-12,14-15,26,35-36,38-42H,7-10,13,16-25,27-34H2,1-6H3/b12-11-,15-14-/t36-,38+,39+,40-,41+,42+,44+,45-/m1/s1

InChI key

NAACPBBQTFFYQB-LJAITQKLSA-N

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This Item
C9253C2800C6013
Cholesteryl linoleate ≥98% (HPLC; detection at 205 nm)

Sigma-Aldrich

C0289

Cholesteryl linoleate

Cholesteryl oleate ≥98% (HPLC; detection at 205 nm)

Sigma-Aldrich

C9253

Cholesteryl oleate

assay

≥98% (HPLC; detection at 205 nm)

assay

≥98% (HPLC; detection at 205 nm)

assay

≥98% (HPLC; detection at 258 nm)

assay

≥98% (TLC)

form

powder

form

powder

form

crystalline powder

form

powder

functional group

ester

functional group

ester

functional group

ester

functional group

ester

shipped in

ambient

shipped in

ambient

shipped in

ambient

shipped in

ambient

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

Application

Cholesteryl linoleate was cosonicated with cholesterol to prepare dispersions were prepared to study the cholesterol to phospholipid ratio in red blood cell membrane. It was used as HPLC standard in the analysis of rat liver lipoproteins.

Biochem/physiol Actions

Cholesteryl linoleate is a major cholesterol ester found associated with the neutral core of low density lipoprotein. Receptor-LDL complexes are taken up by lysosomes and hydrolyzed to release cholesterol from the esters. The enzyme acid cholesteryl ester hydrolase is responsible for the hydrolysis of cholesteryl esters; a defective enzyme can result in the formation of atherosclerotic lesions in humans.
The most abundant cholesteryl ester in low density lipoprotein (LDL).

Packaging

Sealed ampule

Preparation Note

Cholesteryl linoleate yields clear, colorless solution in chloroform at 100 mg/ml.

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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We have previously reported the detection of cholesteryl ester hydroperoxides, consisting mainly of cholesteryl linoleate hydroperoxides (Ch18:2-OOH), at nm levels in plasma from healthy humans (Y. Yamamoto and E. Niki, 1989. Biochem. Biophys. Res. Commun. 165: 988-993). To elucidate their
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R A Cooper et al.
Biochemistry, 17(2), 327-331 (1978-01-24)
L Kritharides et al.
Journal of lipid research, 39(12), 2394-2405 (1998-11-30)
Cholesteryl linoleate hydroperoxide (CLOOH) and hydroxide (CLOH) are present in human atheroma. The intracellular metabolism of low density lipoprotein (LDL)-derived CLOOH and CLOH remain undefined because extensive free radical-mediated LDL oxidation, which modifies LDL apolipoprotein B sufficiently to allow endocytosis
J K Christison et al.
Journal of lipid research, 36(9), 2017-2026 (1995-09-01)
This study examines the cholesteryl ester transfer protein (CETP)-mediated exchange of cholesteryl linoleate hydroperoxide (Ch18:2-OOH) and cholesteryl linoleate hydroxide (Ch18:2-OH) between low density lipoprotein (LDL) and high density lipoprotein (HDL). When [3H]Ch18:2-OOH- and [3H]18:2-OH-labeled LDL were incubated at 37 degrees

Articles

Cholesterol undergoes esterification to improve transport. Cholesterol esters are more easily packaged into the interior of lipoproteins - increasing the quantity that can be readily transported in the blood stream.

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