Ethynyl Estradiol 3-Acetate

About Ethynyl Estradiol 3-Acetate

Ethynyl Estradiol 3-Acetate is an impurity of Estradiol carrying the CAS registry number 5779-47-5. The compound has the formula C22H26O3, corresponding to a molecular weight of 338.4 g/mol. Alternative names: Ethinylestradiol 3-Acetate.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Good laboratory practice and suitable PPE are recommended during handling.

As a characterised impurity of Estradiol, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

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

Industries

Related to Estradiol

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

Estradiol impurities

Specifications & identifiers

Chemical identifiers
Product name	Ethynyl Estradiol 3-Acetate
Catalogue No.	VQ-043159
CAS Number	5779-47-5
IUPAC name	[(8R,9S,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] acetate
Molecular formula	C₂₂H₂₆O₃
Molecular weight	338.4 g/mol
Exact mass	338.1882
Grade	Reference Standard
HSN code	38229090
InChIKey	WHONTIANOSNSAH-AANPDWTMSA-N
SMILES	CC(=O)OC1=CC2=C(C=C1)[C@H]3CC[C@]4([C@H]([C@@H]3CC2)CC[C@]4(C#C)O)C
PubChem CID	22790936

Physical properties
Physical form	Solid
LogP (XLogP3)	3.8
H-bond donors / acceptors	1 / 3
TPSA	46.5 Å²

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 Ethynyl Estradiol 3-Acetate?

The CAS Registry Number of Ethynyl Estradiol 3-Acetate is 5779-47-5. It is also known as Ethinylestradiol 3-Acetate, (17alpha)-17-Hydroxy-19-norpregna-1,3,5(10)-trien-20-yn-3-yl acetate, 17-Hydroxy-17alpha-19-norpregna-1,3,5(10)-trien-20-yn-3-yl acetate.

What is the molecular formula and molecular weight of Ethynyl Estradiol 3-Acetate?

Ethynyl Estradiol 3-Acetate has the molecular formula C22H26O3 and a molecular weight of 338.4 g/mol. Its IUPAC name is [(8R,9S,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] acetate.

What is Ethynyl Estradiol 3-Acetate used for?

Ethynyl Estradiol 3-Acetate is supplied as a characterised reference material related to Estradiol. 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 Ethynyl Estradiol 3-Acetate can I order?

We supply Ethynyl Estradiol 3-Acetate 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 Ethynyl Estradiol 3-Acetate?

Yes. Every lot of Ethynyl Estradiol 3-Acetate 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 Ethynyl Estradiol 3-Acetate be shipped internationally?

Yes. We export Ethynyl Estradiol 3-Acetate worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.