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Hefei TNJ chemical industry co.,ltdGood quality Cholesterol//57-88-5//www.lookchem.com/300w//2010/0626/57-88-5.jpg
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Good quality Cholesterol//57-88-5 CAS NO.57-88-5

Min.Order Quantity:
1 Kilogram
Purity:
99%min
Port:
Shanghai
Payment Terms:
L/C,T/T,Western Union

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Product Details

Keywords

  • cas 57-88-5
  • Cholesterol
  • Cholesterol cas 57-88-5 manufacturer

Quick Details

  • ProName: Good quality Cholesterol//57-88-5
  • CasNo: 57-88-5
  • Molecular Formula: C27H46O
  • Appearance: White crystalline powder
  • Application: Used for flocculent cephalin cholester...
  • DeliveryTime: Within 5-7 days
  • PackAge: 25kg/drum
  • Port: Shanghai
  • ProductionCapacity: 10 Metric Ton/Month
  • Purity: 99%min
  • Storage: kept in a light-proof,well-colsed,dry ...
  • Transportation: CIF or FOB
  • LimitNum: 1 Kilogram
  • Related Substances: 0.001%
  • Residue on Ignition: 0.02%
  • Heavy Metal: 10ppm
  • Valid Period: 2 years
  • Melting point: 148-150 °C
  • Specific rotation: -36 o (c=2, dioxane)
  • Boiling point: 360 °C

Superiority

Good quality

Competitive price

On time delivery

Our Advantages:
Full experience of large numbers containers loading in main Chinese seaports
Packing with pallet as buyer's special request
Best service after shipment with e-mail
Cargos together with container sales seervice available
Rich experience for exporting
Cargos photo before and after loading into container
Raw materials from chinese origin
Hefei TNJ Chemical Industry Co., limited(ISO 9001: 2008), are strong in the field of Pharmaceuticals,
API,food additives,plant extract and fine chemicals for more than 10 years.

Details

Specifications

1.Cholesterol
2.White crystalline powder
3.Professional manufacture
4.High quality competitive price
5.C27H46O

Description

Name Cholesterol
Appearance White crystalline powder
Cas 57-88-5
MF C27H46O
Mol.mass 386.6535
Grade Medicine grade
Assay ≥98%
Delivery Prompt
Package Aluminum can
Standard BP

Cholesterol, from the Greek chole- (bile) and stereos (solid) followed by the chemical suffix -ol for an alcohol, is an organic chemical substance classified as a waxy steroid of fat. It is an essential structural component of mammalian cell membranes and is required to establish proper membrane permeability and fluidity.

In addition to its importance within cells, cholesterol is an important component in the hormonal systems of the body for the manufacture of bile acids, steroid hormones, and vitamin D. Cholesterol is the principal sterol synthesized by animals; in vertebrates it is formed predominantly in the liver. Small quantities are synthesized in other cellular organisms (eukaryotes) such as plants and fungi. It is almost completely absent among prokaryotes (i.e., bacteria).

Although cholesterol is important and necessary for human health, high levels of cholesterol in the blood have been linked to damage to arteries and cardiovascular disease.

François Poulletier de la Salle first identified cholesterol in solid form in gallstones, in 1769. However, it was only in 1815 that chemist Eugène Chevreul named the compound "cholesterine".

Function

Cholesterol is required to build and maintain membranes; it modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group on cholesterol interacts with the polar head groups of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty acid chain of the other lipids. Through the interaction with the phospholipid fatty acid chains, cholesterol increases membrane packing, which reduces membrane fluidity.In this structural role, cholesterol reduces the permeability of the plasma membrane to neutral solutes, protons, (positive hydrogen ions) and sodium ions.

Within the cell membrane, cholesterol also functions in intracellular transport, cell signaling and nerve conduction. Cholesterol is essential for the structure and function of invaginated caveolae and clathrin-coated pits, including caveola-dependent and clathrin-dependent endocytosis. The role of cholesterol in such endocytosis can be investigated by using methyl beta cyclodextrin to remove cholesterol from the plasma membrane. Recently, cholesterol has also been implicated in cell signaling processes, assisting in the formation of lipid rafts in the plasma membrane. Lipid raft formation brings receptor proteins in close proximity with high concentrations of second messenger molecules. In many neurons, a myelin sheath, rich in cholesterol, since it is derived from compacted layers of Schwann cell membrane, provides insulation for more efficient conduction of impulses.

Within cells, cholesterol is the precursor molecule in several biochemical pathways. In the liver, cholesterol is converted to bile, which is then stored in the gallbladder. Bile contains bile salts, which solubilize fats in the digestive tract and aid in the intestinal absorption of fat molecules as well as the fat-soluble vitamins, A, D, E, and K. Cholesterol is an important precursor molecule for the synthesis of vitamin D and the steroid hormones, including the adrenal gland hormones cortisol and aldosterone, as well as the sex hormones progesterone, estrogens, and testosterone, and their derivatives.

Some research indicates cholesterol may act as an antioxidant.

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