| Customization: | Available |
|---|---|
| CAS No.: | 57-88-5 |
| Formula: | C27h46o |
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Introduction:
Cholesterol is an important indicator of clinical biochemical examination. Under normal circumstances, the cholesterol synthesized by the body in the liver and taken from food will be converted into a component of cell membranes, and keep the concentration of cholesterol in the blood constant . When the liver is severely diseased, cholesterol levels decrease. In patients with jaundice obstruction and nephrotic syndrome, cholesterol levels tend to rise.
Function:
1. Cholesterol functions as an insulating cover for the transmission of electrical impulses in the nervous tissue.
2. Cholesterol is required to build and maintain membranes; it modulates membrane fluidity over the range of physiological temperatures. The hydroxy 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.
3. Cholesterol contributes to the decreased fluidity of the cell membrane as the molecule is in a trans conformation making all but the side chain of cholesterol rigid and planar. In this structural role, cholesterol reduces the permeability of the plasma membrane to neutral solutes, hydrogen ions, and sodium ions.
| Melting point | 148-150 °C |
| Boiling point | 360 °C |
| density | 1.06 |
| refractive index | 1.5250 (estimate) |
| Fp | 250 °C |
| storage temp. | -20°C |
| solubility | H2O: 0.002 mg/mL |
| pka | 15.03±0.70(Predicted) |
| form | powder |
| color | white |
Packaging:
Shipping:
Q1:May I get one simple before placing order?
For those high value products, you just need to freight and certain productcost. When we both cooperate for some times or when you are our VIPcustomer, free sample will be offered when you need.
Q2:Which payment is available for your company?
Re: T/T, L/C trade insurance. You can choose the one which isconvenient for you.
Q3.:How and when can l get my goods after payment?
Re: For small quantity products, they will be delivered to you byinternational courier(DHL, FedEx, TNT etc.) or by air. Usually it will cost3-5days that you can get the goods after delivery.For large quantityproducts,shipping by see is worthwhile.lt will cost days to weeks to come toyour destination port, which depends on where the port is.
Q4: Is there any possible to use my appointed label or package?
Re: Yes. lf needed, we'd like to use label or package according to yourrequirement.
Q5: How can you guarantee the goods you offer is qualified?
Re: We always believe honesty and responsibility are basis of onecompany, so whatever products we provide for you all are qualified. We willhave goods tested and provide COA before delivery for sure.
After Sales Service:
NO.1.Our company guarantes that the products that leave the factory are produced and inspected accrding to the relevant national standards and the ungualitfed productswll never leave the factory. Guarantee the strict implementation and fulfilment ofproduct quality, and strictly implement relevant regulations on product afer-salesservice.
NO.2. the customer raises objection to the quality ofou company's products, we promises to respond within 24 hours afer reciving the user's objection Ifthe quality ofour company's products does not meet the promise, we are willing to refund the payment.
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