C27H44O
384.6 g/mol
Pharmaceutical Intermediate
7-Dehydrocholesterol
CAS434-16-2EC207-100-5
Category
Pharmaceutical Intermediate
Compound Class
Steroid
Primary Use
Pharmaceutical Intermediate
7-Dehydrocholesterol is a zoosterol that serves as a precursor to cholesterol in the serum and acts as a provitamin-D3 in the skin. Upon exposure to ultraviolet UV-B rays from sunlight, it is photochemically converted into vitamin D3 (cholecalciferol) via previtamin D3, enabling the body to manufacture this essential nutrient.
Pharmaceutical intermediate for vitamin D3 productionRaw material for biochemical research on vitamin D synthesisLaboratory reagent for studies of cholesterol metabolism
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
SimilarStructure SimilarSimilarity 0.80
(3S,9R,10S,13R,14R,17R)-17-[(2R)-6-hydroxy-6-methylheptan-2-yl]-10,13-dimethyl-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-ol
CAS61585-29-3
research compound
SimilarStructure SimilarSimilarity 0.80
25-hydroxy-7-dehydrocholesterol
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ReferenceSame Category
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ReferenceSame Category
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2-Bromomethyl-1,3-dioxolane
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2-Trifluoromethyl-5-bromopyridine
CAS436799-32-5
pharmaceutical intermediate
Referencestereoisomer of
Cholesta-5,7-dien-3beta-ol-d7
CAS388622-58-0
research compound
Referencesame scaffold
Ergosterol
CAS57-87-4
pharmaceutical raw material
Safety Reference
H413May cause long lasting harmful effects to aquatic life
Customs Tariff Classification
The international HS code for 7-Dehydrocholesterol (CAS 434-16-2) is 2936.90.
HS code (international, 6-digit)
2936.90
EU CN code (8-digit)
2936 90 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
(3S,9S,10R,13R,14R,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-ol
InChIKey
UCTLRSWJYQTBFZ-DDPQNLDTSA-N
SMILES
C[C@H](CCCC(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3C2=CC=C4[C@@]3(CC[C@@H](C4)O)C)C
Synonyms (46)
- 7-DHC
- Cholecalciferol EP Impurity B
- (3b)-7-Dehydro Cholesterol
- (3b)-Cholesta-5,7-dien-3-ol
- (3beta)-7-Dehydro Cholesterol
- (3|A)-Cholesta-5,7-dien-3-ol
- 3?-Hydroxy-5,7-cholestadiene
- 5,7-Cholestadien-3-beta-ol
- 5,7-Cholestadien-3?-ol
- 5,7-Cholestandien-3-ol
- 5,7-Cholestandien-3beta-ol
- 7,8-Didehydrocholesterol
- 7,8-dehydro-cholesterol
- 7-Dehydrocholesterin
- 7-Dehydrocholesterol
- 7-Dehydrocholesterol - min
- CHOLECALCIFEROL IMPURITY B
- Caswell No. 902E
- Cholesta-5,7-dien-3-ol
- Cholesta-5,7-dien-3-ol, (3b)-
- Cholesta-5,7-dien-3beta-ol
- Cholesterol, 7-dehydro-
- Dehydrocholesterin
- Dehydrocholesterin [German]
- Dehydrocholesterol
- Provitamin D(sub 3)
- Provitamin D3
- cholesta-5,7-dien-3b-ol
- delta(sup 5,7)-Cholesterol
- delta(sup 7)-Cholesterol
- delta5,7-Cholesterol
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