Ethinyl Estradiol EP Impurity I

Name: Ethinyl Estradiol EP Impurity I
Brand: Vaqora Chemicals
SKU: VQ-022573

About Ethinyl Estradiol EP Impurity I

Vaqora Chemicals supplies Ethinyl Estradiol EP Impurity I, a pharmacopeial impurity of Ethinylestradiol registered under CAS number 67703-68-8. Its molecular formula is C20H22O2 and its molecular weight is 294.4 g/mol. Systematically, it is named (8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthrene-3,17-diol. Common synonyms include 6,7-Dehydro Ethynyl Estradiol and Ethinylestradiol - Impurity I.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

This Ethinylestradiol impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Ethinyl Estradiol EP Impurity I in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Ethinylestradiol

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

Ethinylestradiol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Ethinyl Estradiol EP Impurity I
Catalogue No.	VQ-022573
CAS Number	67703-68-8
IUPAC name	(8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthrene-3,17-diol
Molecular formula	C₂₀H₂₂O₂
Molecular weight	294.4 g/mol
Exact mass	294.162
Grade	Reference Standard
HSN code	38229090
InChIKey	CLXHHBFTRYNQBO-SLHNCBLASA-N
SMILES	C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)C=CC4=C3C=CC(=C4)O
PubChem CID	11208630

Physical properties
Physical form	Solid
LogP (XLogP3)	3.6
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	6,7-Dehydro Ethynyl Estradiol, Ethinylestradiol - Impurity I, 6,7-Dehydroethynylestradiol, Ethinylestradiol impurity I, Ethinylestradiol specified impurity I, 6,7-Dehydro ethynylestradiol, delta6- Ethinyl estradiol, 19-Nor-17alpha-pregna-1,3,5(10),6-tetraen-20-yne-3,17-diol, 19-Norpregna-1,3,5(10),6-tetraen-20-yne-3,17-diol, (17alpha)-, 17alpha-19-Norpregna-1,3,5(10),6-tetraen-20-yne-3,17-diol, 19-Nor-17alpha-pregna-1,3,5(10),6-tetraen-20-yne-3,17-diol (6,7-Didehydroethinylestradiol)

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H350May cause cancer
H362May cause harm to breast-fed children
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P203, P260, P263, P264, P270, P273, P280, P318, P391, P405, 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 Ethinyl Estradiol EP Impurity I?

The CAS Registry Number of Ethinyl Estradiol EP Impurity I is 67703-68-8. It is also known as 6,7-Dehydro Ethynyl Estradiol, Ethinylestradiol - Impurity I, 6,7-Dehydroethynylestradiol.

What is the molecular formula and molecular weight of Ethinyl Estradiol EP Impurity I?

Ethinyl Estradiol EP Impurity I has the molecular formula C20H22O2 and a molecular weight of 294.4 g/mol. Its IUPAC name is (8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthrene-3,17-diol.

What is Ethinyl Estradiol EP Impurity I used for?

Ethinyl Estradiol EP Impurity I is supplied as a characterised reference material related to Ethinylestradiol. 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 Ethinyl Estradiol EP Impurity I can I order?

We supply Ethinyl Estradiol EP Impurity I 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 Ethinyl Estradiol EP Impurity I?

Yes. Every lot of Ethinyl Estradiol EP Impurity I 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 Ethinyl Estradiol EP Impurity I be shipped internationally?

Yes. Ethinyl Estradiol EP Impurity I 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.