Ethyl

Name: Ethyl
Brand: Vaqora Chemicals
SKU: VQ-032296

About Ethyl

Ethyl is an impurity of Oseltamivir carrying the CAS registry number 204254-96-6. Formula C14H22O4, molecular weight 254.32 g/mol. The IUPAC name is ethyl (1S,5R,6S)-5-pentan-3-yloxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate. Alternative names: DFO-5 and Oseltamivir intermediate.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

This Oseltamivir impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Ethyl in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Oseltamivir

View every impurity, metabolite and intermediate we list for Oseltamivir.

Oseltamivir impurities

Specifications & identifiers

Chemical identifiers
Product name	Ethyl
Catalogue No.	VQ-032296
CAS Number	204254-96-6
IUPAC name	ethyl (1S,5R,6S)-5-pentan-3-yloxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate
Molecular formula	C₁₄H₂₂O₄
Molecular weight	254.32 g/mol
Exact mass	254.1518
Grade	Reference Standard
HSN code	38229090
InChIKey	XZXCGRFGEVXWIT-FRRDWIJNSA-N
SMILES	CCC(CC)O[C@@H]1C=C(C[C@H]2[C@@H]1O2)C(=O)OCC
PubChem CID	10131259

Physical properties
Physical form	Solid
LogP (XLogP3)	2.4
H-bond donors / acceptors	0 / 4
TPSA	48.1 Å²
Synonyms	ethyl (1S,5R,6S)-5-(1-ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate, Ethyl (1S,5R,6S)-5-(1-ethylpropoxy)-7-oxabicyclo(4.1.0)hept-3-ene-3-carboxylate, Ethyl (1S,5R,6S)-5-(pentan-3-yl-oxy)-7-oxa-bicyclo[4.1.0]hept-3-ene-3-carboxylate, (1S,5R,6S)-Ethyl 5-(pentan-3-yl-oxy)-7-oxa-bicyclo[4.1.0]hept-3-ene-3-carboxylate, Ethyl (3R,4S,5S)-4,5-Epoxy-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate, DFO-5, (1S,5R,6S)-ethyl 5-(pentan-3-yloxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate, ethyl (1S,5R,6S)-5-(pentan-3-yloxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate, Oseltamivir intermediate, Ethyl (3R,4S,5S)4,5-Epoxy-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate, Ethyl(3R,4S,5S)-4,5-Epoxy-3-(1-ethyl-propoxy)-cyclohex-1-ene-1-carboxylate, Oseltamivir Intermediate 8

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Warning

Hazard statements

H317May cause an allergic skin reaction

Precautionary statements: P260, P261, P272, P280, P302 + P352, P319, P321, P333 + P317, P362 + P364, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Ethyl?

The CAS Registry Number of Ethyl is 204254-96-6. It is also known as ethyl (1S,5R,6S)-5-(1-ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate, Ethyl (1S,5R,6S)-5-(1-ethylpropoxy)-7-oxabicyclo(4.1.0)hept-3-ene-3-carboxylate, Ethyl (1S,5R,6S)-5-(pentan-3-yl-oxy)-7-oxa-bicyclo[4.1.0]hept-3-ene-3-carboxylate.

What is the molecular formula and molecular weight of Ethyl?

Ethyl has the molecular formula C14H22O4 and a molecular weight of 254.32 g/mol. Its IUPAC name is ethyl (1S,5R,6S)-5-pentan-3-yloxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate.

What is Ethyl used for?

Ethyl is supplied as a characterised reference material related to Oseltamivir. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Ethyl can I order?

We supply Ethyl in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Ethyl?

Yes. Every lot of Ethyl is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Ethyl be shipped internationally?

Yes. Ethyl is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.