C28H44O2
412.6 g/mol
APIDanger
25-HYDROXYVITAMIN D2
CAS21343-40-8
Category
API
Compound Class
Steroid
Primary Use
Pharmaceutical Raw Material
25-Hydroxyvitamin D2 is a biologically active metabolite of vitamin D2, formed by the addition of a hydroxy group at the 25th position. It functions as a nutraceutical and a human xenobiotic metabolite and is used as an active pharmaceutical ingredient in products aimed at supporting bone density.
active pharmaceutical ingredient in bone density conservation productsresearch compound for nutraceutical studiesstandard for vitamin D metabolism studies
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 0.79
1,25-dihydroxycalciferol
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SimilarStructure SimilarSimilarity 0.78
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Referencestereoisomer of
(3S,5E,7E)-(6,19,19-~2~H_3_)-9,10-Secoergosta-5,7,10,22-tetraene-3,25-diol
CAS1217467-39-4
pharmaceutical raw material
Safety Reference
Danger
H301Toxic if swallowed
H311Toxic in contact with skin
H330Fatal if inhaled
H372Causes damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for 25-HYDROXYVITAMIN D2 (CAS 21343-40-8) is 2906.19.
HS code (international, 6-digit)
2906.19
EU CN code (8-digit)
2906 19 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
(1S,3Z)-3-[(2E)-2-[(1R,3aS,7aR)-1-[(E,2R,5S)-6-hydroxy-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol
InChIKey
KJKIIUAXZGLUND-ICCVIKJNSA-N
SMILES
C[C@H](/C=C/[C@H](C)C(C)(C)O)[C@H]1CC[C@@H]\2[C@@]1(CCC/C2=C\C=C/3\C[C@H](CCC3=C)O)C
Synonyms (21)
- 25-HYDROXYVITAMIN D2
- 25-Hydroxycalciferol
- 25-Hydroxyecalciferol
- 25-Hydroxyergocalciferol
- 25-Hydroxyvitamin D?
- Ercalcidiol
- Ercalcidiol (Standard)
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