Home/Compounds/Pharmaceutical Intermediate/(1S,5R,6S)-Ethyl 5-(pentan-3-yl-oxy)-7-oxa-bicyclo[4.1.0]hept-3-ene-3-carboxylate
C14H22O4
254.32 g/mol
Pharmaceutical IntermediateWarning
Ethyl (1S,5R,6S)-5-(1-ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate
CAS204254-96-6EC429-020-1
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
This compound is a pharmaceutical intermediate specifically used in the manufacturing process of oseltamivir, an antiviral medication. It features a bicyclic structure with ester and ether functional groups and is produced under controlled conditions for pharmaceutical supply chains.
Pharmaceutical intermediate for oseltamivir synthesisResearch compound for antiviral drug development 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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Safety Reference
Warning
H317May cause an allergic skin reaction
H373May cause damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for Ethyl (1S,5R,6S)-5-(1-ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate (CAS 204254-96-6) is 2918.99.
HS code (international, 6-digit)
2918.99
EU CN code (8-digit)
2918 99 90
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
ethyl (1S,5R,6S)-5-pentan-3-yloxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate
InChIKey
XZXCGRFGEVXWIT-FRRDWIJNSA-N
SMILES
CCC(CC)O[C@@H]1C=C(C[C@H]2[C@@H]1O2)C(=O)OCC
Synonyms (13)
- Oseltamivir Impurity 273
- Oseltamivir Intermediate 8
- Oseltamivir intermediate
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