7- Dehydrocholesterol CAS 434-16-2 Vitamin Precursor 99% Purity Provitamin D3

Basic Information
Place of Origin: China
Brand Name: Senwayer Brand
Certification: ISO, 9001,
Model Number: 434-16-2
Minimum Order Quantity: 1 Drum
Price: Discount is possible if your order is big enough
Packaging Details: 10g, 20g, 50g , 100g, 500g. 1kg, 10kg
Delivery Time: within 2 working days
Payment Terms: T/T in advance, Money Gram, Western Union, Bank Transfer.
Supply Ability: 1000kg/month
Detail Information
CAS: 434-16-2 Apparence: White Crystalline Powder
Purity: 99% Packing: 25kg/ Bag, Stored In Cool And Dry Place
Stock: Enough Stock Storage Condition: Store In A Cool, Dry, Well-ventilated
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Product Description


7- Dehydrocholesterol CAS 434-16-2 Vitamin Precursor 99% Purity Provitamin D3
Quick detail

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
CAS: 434-16-2
MF: C27H44O
MW: 384.64
EINECS: 207-100-5
Product Categories: Pharmaceutical Raw Materials;Intermediates & Fine Chemicals;Pharmaceuticals;Steroids
Melting point 148-152 °C(lit.)
alpha -116 º (C=1, CHCL3)
storage temp. −20°C
Water Solubility Insoluble



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 manufacturevitamin D3 from ultraviolet rays in the sun light, via an intermediate isomer pre-vitamin D3. It is also found in the milk of several mammalian species.[1] In insects it is a precursor for the hormone ecdysone, required for reaching adulthood.[2] It was discovered by Nobel-laureate organic chemist Adolf Windaus.



1. Synthesis of vitamin D3 important intermediates
2. Skin care sunscreen cosmetics additives
3. Other laboratory reagents
Storage: Store in a dry, clean, cool and dark place. Should be avoided with toxic, harmful, contaminated items at the same time storage. In compliance with the above conditions, the shelf life of 36 months.


 7- Dehydrocholesterol CAS 434-16-2 Vitamin Precursor 99% Purity Provitamin D3 0


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