C27H44O3
416.6 g/mol
APIDanger
Paricalcitol
CAS131918-61-1
Category
API
Compound Class
Steroid
Primary Use
Pharmaceutical Raw Material
Paricalcitol is a seco-cholestane and a hydroxy seco-steroid, functionally related to vitamin D2. It is used as an antiparathyroid drug substance in pharmaceutical manufacturing.
active pharmaceutical ingredient for secondary hyperparathyroidism in chronic kidney disease
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
ReferenceSame Category
Benztropine mesylate
CAS132-17-2
pharmaceutical raw material
ReferenceSame Category
Diphenylpyraline hydrochloride
CAS132-18-3
pharmaceutical raw material
ReferenceSame Category
Pheniramine maleate
CAS132-20-7
pharmaceutical raw material
ReferenceSame Category
Chlorpheniramine
CAS132-22-9
pharmaceutical raw material
Referencestereoisomer of
Paricalcitol Impurity 2
CAS132015-95-3
pharmaceutical intermediate
Referencestereoisomer of
22Z-Paricalcitol
CAS1884139-61-0
research compound
Referencestereoisomer of
Paricalcitol Impurity 8
CAS216161-87-4
pharmaceutical intermediate
Safety Reference
Danger
H300Fatal if swallowed
H301Toxic if swallowed
H311Toxic in contact with skin
H330Fatal if inhaled
H351Suspected of causing cancer
H361Suspected of damaging fertility or the unborn child
H362May cause harm to breast-fed children
H372Causes damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for Paricalcitol (CAS 131918-61-1) 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
trans-(1R,3R)-5-[(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]cyclohexane-1,3-diol
InChIKey
BPKAHTKRCLCHEA-UBFJEZKGSA-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=C3C[C@H](C[C@@H](C3)O)O)C
Synonyms (23)
- Paricalcitol (JAN/USP/INN)
- 19-Nor-1,25-(OH)2D2
- Compound 49510
- PARICALCITOL [MART.]
- Paracalcin
- Paricalcitol
- Paricalcitol (Standard)
- Zemplar
- Zemplar (TN)
- paricalcitolum
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