C22H31FO5
394.5 g/mol
APIWarning
1,2-Dihydro Dexamethasone
CAS426-17-5
Category
API
Compound Class
Steroid
Primary Use
Pharmaceutical Raw Material
1,2-Dihydro Dexamethasone is a steroidal compound that serves as an active pharmaceutical ingredient. Its structure features a fused four-ring steroid framework with multiple hydroxyl groups and a fluorine atom, contributing to its chemical properties.
pharmaceutical raw materialresearch compound for steroid chemistry
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
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Safety Reference
Warning
H302Harmful if swallowed
H373May cause damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for 1,2-Dihydro Dexamethasone (CAS 426-17-5) is 2914.79.
HS code (international, 6-digit)
2914.79
EU CN code (8-digit)
2914 79 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
(8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one
InChIKey
YYZXYYHUGHQGHI-CXSFZGCWSA-N
SMILES
C[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)CC[C@@]4([C@]3([C@H](C[C@@]2([C@]1(C(=O)CO)O)C)O)F)C
Synonyms (14)
- Dexamethasone EP Impurity C
- Dexamethasone Imp. C (EP); 9-Fluoro-11beta,17,21-trihydroxy-16alpha-methylpregn-4-ene-3,20-dione; Dexamethasone Impurity C
- 1,2-Dihydro Dexamethasone
- Dexamethasone impurity C
- US10188667, Dexamethasone
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