Organic intermediate

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7-Dehydrocholesterol CAS 434-16-2

Product name: 7-Dehydrocholesterol

CAS NO: 434-16-2

Molecular formula:C27H44O

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Place of Origin: China
Brand Name: FIRSKY
Model Number: 1KG
Certification: SGS,ISO 9001
Purity: 99%
Packaging Details: Custom aluminum packages,paper boxes,wooden cartons
Delivery Time: Tracks available within 3-5 working days after payment received
Payment Terms: Escrow,Bank transfer,Western Union,Money Gram,Wise,Crypto currencies
Supply Ability: 2000T/Mouth


7-Dehydrocholesterol is a naturally occurring sterol and a precursor in the biosynthesis of cholesterol and vitamin D3 (cholecalciferol) in the human body. It is an intermediate compound in the pathway that converts 7-dehydrocholesterol to previtamin D3 upon exposure to ultraviolet B (UVB) radiation from sunlight.


7-Dehydrocholesterol itself does not have direct therapeutic uses or applications. However, it plays a crucial role in the endogenous synthesis of vitamin D3 in the skin upon exposure to ultraviolet B (UVB) radiation from sunlight. Vitamin D3, also known as cholecalciferol, is the biologically active form of vitamin D, and it serves various important functions in the body. Some of the main uses of 7-dehydrocholesterol are related to its role in vitamin D synthesis:

1. Vitamin D Production: 7-Dehydrocholesterol is a precursor in the biosynthesis of vitamin D3 in the skin. When the skin is exposed to UVB radiation, 7-dehydrocholesterol is converted into previtamin D3, which is then thermally converted to vitamin D3. Vitamin D3 is biologically inactive and undergoes further transformations in the liver and kidneys to become the biologically active form of vitamin D, known as calcitriol.

2. Bone Health: One of the primary roles of vitamin D is to regulate calcium and phosphorus metabolism, which is essential for maintaining healthy bones. Adequate vitamin D levels help the body absorb calcium from the diet, promoting bone mineralization and preventing conditions like rickets in children and osteomalacia in adults.

3. Immune Function: Vitamin D plays a role in modulating the immune system and supporting immune function. It may help enhance the body's defense against infections and reduce the risk of certain immune-related disorders.

4. Regulation of Gene Expression: Vitamin D acts as a hormone that regulates the expression of various genes involved in cell growth, differentiation, and other physiological processes. It influences multiple cellular pathways and has implications for overall health and disease prevention.

5. Cardiovascular Health: Some research suggests that adequate vitamin D levels may be associated with a reduced risk of cardiovascular diseases, including hypertension, heart disease, and stroke.

6. Mood and Mental Health: Vitamin D receptors are found in the brain, and vitamin D has been studied for its potential role in mood regulation and mental health. Low vitamin D levels have been associated with conditions like depression and seasonal affective disorder (SAD).

7. Other Potential Benefits: Research is ongoing to explore other potential uses and health benefits of vitamin D, including its role in cancer prevention, diabetes management, and autoimmune diseases.

It's important to note that while vitamin D is essential for various physiological functions, excessive sunlight exposure should be avoided to prevent the risk of skin damage and sunburn. Additionally, individuals with certain medical conditions or who have difficulty obtaining adequate sunlight exposure may require vitamin D supplementation to maintain optimal vitamin D levels. As with any health-related concerns, it's essential to consult with a healthcare professional for personalized advice and recommendations regarding vitamin D supplementation or sun exposure.


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;cholesta-5,7-dien-3-beta-ol;Cholesta-5,7-dien-3-ol;Cholesta-5,7-dien-3-ol, (3beta)-
CAS: 434-16-2
MF: C27H44O
MW: 384.64
EINECS: 207-100-5
Melting point 148-152 °C(lit.)
Boiling point 451.27°C (rough estimate)
alpha -116 º (C=1, CHCL3)


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