7-Dehydrocholesterol Manufacturer 434-16-2 Vitamin D3 Intermediates CAS NO.434-16-2

Min.Order: 10 Gram
Payment Terms: T/T,

Product Details

Keywords

100% Natural 7-Dehydrocholesterol
7-Dehydrocholesterol Manufacturer
Vitamin D3 Intermediates

Quick Details

ProName: 7-Dehydrocholesterol Manufacturer 434-...
CasNo: 434-16-2
Molecular Formula: C27H44O
Appearance: White Powder
Application: It Can Be Used As Pharmaceutical Inte...
DeliveryTime: 2-4 days after confirming your payment...
PackAge: 100g/ bag, 2 kg/ bag, 25kg/ carton or ...
Port: Wuhan
ProductionCapacity: 10000 Metric Ton/Month
Purity: 99%
Storage: Store in sealed containers at cool & d...
Transportation: By DHL, TNT, FedEx, HKEMS, UPS, Etc
LimitNum: 10 Gram

Superiority

Advantages:

Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best service is our philosophy. We have Flexible and Untraceable payment terms. As a leading manufacture, our products have been exported to Germany, Norway, Poland, Finland, Spain, UK, France, Russia, USA, Brazil, Mexico, Australia, Japan, Korea, Thailand, Indonesia, Uruguay and many other countries.

1. Quality.Every batch of steroid powders have tobetested by our QC(quality control) before they are allowed to sell.

2. Delivery We have stock, so we can delivery quickly at the very day when receive the payment. Within 24 hours after receiving the payment Lead time 4 or 7 days.

3. Discreet package Safelyand Professionally Disguised Package Guaranteed. For your safety and to insure delivery all products will be packed in a discreet way to prevent any suspicions, no steroids related name will appear on the parcels. high successful delivery rate.

4. Warm after-sale service Any of your question would be solved for the first as soon as possible.

Details

Details :

product name: 7-dehydrocholesterol
synonyms: (3)-7-dehydrochlesterol;(3beta)-cholesta-5,7-dien-3-ol;(3-beta)-cholesta-7-dien-3-ol;(3beta)-cholesta-7-dien-3-ol;3-hydroxycholesta-5,7-diene;5,7-cholestandien-3.beta.-ol;5,7-cholestandien-3beta-ol;7,8-didehydrocholesterol
product details:
place of origin: china
certification: iso9001
brand:yuancheng
payment & shipping terms:

minimum order quantity:1kg
supply ability:500kg/week
delivery time:within 24 hours after payment
payment terms:, moneygram, t/t
appeatance:white to off-white fine crystalline powder

product description:
cas: 434-16-2
mf: c27h44o
mw: 384.64
einecs: 207-100-5
package:25kg/bucket
purity:95%

7-dehydrocholesterol is a zoosterol that functions in the serum as a cholesterol precursor, and is converted to vitamin d3 in the skin, therefore functioning as provitamin-d3. the presence of this compound in human skin enables humans to manufacture vitamin d3 from ultra-violet rays in the sun light, via an intermediate isomer pre-vitamin d3. it is also found in the milk of several mammalian species. in insects it is a precursor for the hormone ecdysone, required for reaching adulthood.it was discovered by nobel-laureate organic chemist adolf windaus

synthesis of pre-vitamin d3 in the skin involves uvb radiation which effectively penetrates only the epidermal layers of skin. 7-dehydrocholesterol absorbs uv light most effectively at wavelengths between 290-320nm and thus the production of vitamin d3 will only occur at those wavelengths. the two most important factors that govern the generation of pre-vitamin d3 are the quantity (intensity) and quality (appropriate wavelength) of the uvb irradiation reaching the 7-dehydrocholesterol deep in the stratum basale and stratum spinosum.[4] another important consideration is the quantity of 7-dehydrocholesterol present in the skin. under normal circumstances, ample quantities of 7-dehydrocholesterol (about 25-50 mg/cm2 of skin) are available in the stratum spinosum and stratum basale of human skin to meet the body's vitamin d requirements.

usage:
1. important intermediate in the synthesis of vitamin d3
2. skin sunscreen additive in cosmetics
3. other laboratory reagents