C23H26O4
366.4 g/mol
Pharmaceutical IntermediateWarning
21-Hydroxypregna-1,4,9(11),16-tetraene-3,20-dione 21-acetate
CAS37413-91-5EC253-497-3
Category
Pharmaceutical Intermediate
Compound Class
Steroid
Primary Use
Pharmaceutical Intermediate
This compound is a steroidal pharmaceutical intermediate with a 21-carbon framework and a ketone group at the 3-position. Its structure is characterized by a fused tetracyclic ring system and an acetate ester side chain.
pharmaceutical intermediate for the synthesis of steroidal compoundsresearch reagent for steroid chemistry 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
ReferenceSame Category
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pharmaceutical intermediate
ReferenceSame Category
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CAS374537-97-0
pharmaceutical intermediate
ReferenceSame Category
2-Bromo-6-methyl-3-nitropyridine
CAS374633-31-5
pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H361Suspected of damaging fertility or the unborn child
Customs Tariff Classification
The international HS code for 21-Hydroxypregna-1,4,9(11),16-tetraene-3,20-dione 21-acetate (CAS 37413-91-5) is 2915.39.
HS code (international, 6-digit)
2915.39
EU CN code (8-digit)
2915 39 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
[2-[(8S,10S,13S,14S)-10,13-dimethyl-3-oxo-6,7,8,12,14,15-hexahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate
InChIKey
UFEOMHFPJREVTP-PTRHGPIFSA-N
SMILES
CC(=O)OCC(=O)C1=CC[C@@H]2[C@@]1(CC=C3[C@H]2CCC4=CC(=O)C=C[C@@]43C)C
Synonyms (16)
- Mometasone Related Compound 4
- Prednisone Impurity 4
- Triamcinolone Impurity 38
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