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  Cholesterol

  • Cholesterol

    Names
    IUPAC name (3β)-cholest-5-en-3-ol
    Systematic IUPAC name 2,15-dimethyl-14-(1,5-dimethylhexyl)tetracyclo[8.7.0.02,7.011,15]heptadec-7-en-5-ol
    Other names (10R,13R)-10,13-dimethyl-17-(6-methylheptan-2-yl)-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol, Cholesterin, Cholesteryl alcohol
    Identifiers
    CAS Number	57-88-5 Y
    3D model (Jmol)	Interactive image
    ChEBI	CHEBI:16113 Y
    ChEMBL	ChEMBL112570 Y
    ChemSpider	5775 Y
    ECHA InfoCard	100.000.321
    IUPHAR/BPS	2718
    KEGG	D00040 Y
    PubChem	5997
    UNII	97C5T2UQ7J Y
    InChI InChI=1S/C27H46O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h9,18-19,21-25,28H,6-8,10-17H2,1-5H3/t19-,21+,22+,23-,24+,25+,26+,27-/m1/s1 Y Key: HVYWMOMLDIMFJA-DPAQBDIFSA-N Y InChI=1/C27H46O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h9,18-19,21-25,28H,6-8,10-17H2,1-5H3/t19-,21+,22+,23-,24+,25+,26+,27-/m1/s1 Key: HVYWMOMLDIMFJA-DPAQBDIFBB
    SMILES C[C@H](CCCC(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC=C4[C@@]3(CC[C@@H](C4)O)C)C
    Properties
    Chemical formula	C27H46O
    Molar mass	386.65 g/mol
    Appearance	white crystalline powder
    Density	1.052 g/cm3
    Melting point	148 to 150 °C (298 to 302 °F; 421 to 423 K)
    Boiling point	360 °C (680 °F; 633 K) (decomposes)
    Solubility in water	1.8 mg/L (30 °C)
    Solubility	soluble in acetone, benzene, chloroform, ethanol, ether, hexane, isopropyl myristate, methanol
    Magnetic susceptibility (χ)	-284.2·10−6 cm3/mol
    Hazards
    Flash point	209.3 ±12.4 °C
    Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
    Y  (what is YN ?)
    Infobox references

    
    

    Cholesterol, from the Ancient Greek chole- (bile) and stereos (solid) followed by the chemical suffix -ol for an alcohol, is an organic molecule. It is a sterol (or modified steroid), a type of lipid molecule, and is biosynthesized by all animal cells, because it is an essential structural component of all animal cell membranes; essential to maintain both membrane structural integrity and fluidity. Cholesterol enables animal cells to dispense with a cell wall (to protect membrane integrity and cell viability), thereby allowing animal cells to change shape and animals to move (unlike bacteria and plant cells, which are restricted by their cell walls).

    In addition to its importance for animal cell structure, cholesterol also serves as a precursor for the biosynthesis of steroid hormones and bile acids. Cholesterol is the principal sterol synthesized by all animals. In vertebrates, hepatic cells typically produce the greatest amounts. It is absent among prokaryotes (bacteria and archaea), although there are some exceptions, such as Mycoplasma, which require cholesterol for growth.

    François Poulletier de la Salle first identified cholesterol in solid form in gallstones in 1769. However, it was not until 1815 that chemist Michel Eugène Chevreul named the compound "cholesterine".

    
    

    Level mg/dL	Level mmol/L	Interpretation
    < 200	< 5.2	Desirable level corresponding to lower risk for heart disease
    200–240	5.2–6.2	Borderline high risk
    > 240	> 6.2	High risk

    
    
    • InChI=1S/C27H46O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h9,18-19,21-25,28H,6-8,10-17H2,1-5H3/t19-,21+,22+,23-,24+,25+,26+,27-/m1/s1 ^Y

      Key: HVYWMOMLDIMFJA-DPAQBDIFSA-N ^Y
    • InChI=1/C27H46O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h9,18-19,21-25,28H,6-8,10-17H2,1-5H3/t19-,21+,22+,23-,24+,25+,26+,27-/m1/s1

      Key: HVYWMOMLDIMFJA-DPAQBDIFBB
    • C[C@H](CCCC(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC=C4[C@@]3(CC[C@@H](C4)O)C)C
    • Arcus senilis "Cholesterol ring" in the eyes
    • Cardiovascular disease
    • Cholesterol embolism
    • Cholesterol total synthesis
    • Familial hypercholesterolemia
    • List of cholesterol in foods
    • Niemann–Pick disease Type C
    • Oxycholesterol
    • 

      Cholesterol units conversion

    • 

      Steroidogenesis, using cholesterol as building material

    • 

      Space-filling model of the Cholesterol molecule

    • 

      Numbering of the steroid nuclei

    • "About cholesterol". American Heart Association. Archived from the original on 3 October 2001. 
    • "Understanding the cholesterol test". Lab Tests Online. American Association for Clinical Chemistry. 

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