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Home/Compounds/API/Betamethasone 9,11-epoxide
C22H28O5
372.5 g/mol
API

Betamethasone 9,11-Epoxide

CAS981-34-0EC213-563-4
Category
API
Compound Class
Steroid
Primary Use
Pharmaceutical Raw Material

Betamethasone 9,11-Epoxide is a chemical compound used as a pharmaceutical intermediate in the synthesis of glucocorticoids, a class of steroidal hormones with anti-inflammatory and immunosuppressive properties. It is primarily supplied for research and manufacturing purposes.

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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Referencestereoisomer of

Dexamethasone 9,11-epoxide

CAS24916-90-3

pharmaceutical intermediate

Customs Tariff Classification

The international HS code for Betamethasone 9,11-Epoxide (CAS 981-34-0) is 2914.50.

HS code (international, 6-digit)

2914.50

EU CN code (8-digit)

2914 50 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,2S,10S,11S,13S,14R,15S,17S)-14-hydroxy-14-(2-hydroxyacetyl)-2,13,15-trimethyl-18-oxapentacyclo[8.8.0.01,17.02,7.011,15]octadeca-3,6-dien-5-one

InChIKey

GBDXNHBVYAMODG-DEGNENOVSA-N

SMILES

C[C@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@]35[C@@H](O5)C[C@@]2([C@]1(C(=O)CO)O)C)C

Synonyms (20)
  • BECLOMETHASONE DIPROPIONATE IMPURITY R (EP IMPURITY)
  • BETAMETHASONE IMPURITY E (EP IMPURITY)
  • Beclometasone Dipropionate EP Impurity R; Betamethasone EP Impurity E
  • Betamethasone EP Impurity E
  • 16-beta Methyl Epoxide
  • BETAMETHASONE IMPURITY E
  • Betamethasone 9,11-Epoxide

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