17a-Dihydro Equilenin

About 17a-Dihydro Equilenin

17a-Dihydro Equilenin is an impurity of Equilenin carrying the CAS registry number 6639-99-2. Formula C18H20O2, molecular weight 268.3 g/mol. The IUPAC name is (13S,14S,17R)-13-methyl-11,12,14,15,16,17-hexahydrocyclopenta[a]phenanthrene-3,17-diol. Common synonyms include 17α-Dihydro Equilenin and 17alpha-Dihydro Equilenin.

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. It carries the GHS signal word “Danger” with 3 hazard statements. Review the Safety Data Sheet before use.

This Equilenin impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 17a-Dihydro Equilenin is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Equilenin

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

Equilenin impurities

Specifications & identifiers

Chemical identifiers
Product name	17a-Dihydro Equilenin
Catalogue No.	VQ-022571
CAS Number	6639-99-2
IUPAC name	(13S,14S,17R)-13-methyl-11,12,14,15,16,17-hexahydrocyclopenta[a]phenanthrene-3,17-diol
Molecular formula	C₁₈H₂₀O₂
Molecular weight	268.3 g/mol
Exact mass	268.1463
Grade	Reference Standard
HSN code	38229090
InChIKey	RYWZPRVUQHMJFF-KSZLIROESA-N
SMILES	C[C@]12CCC3=C([C@@H]1CC[C@H]2O)C=CC4=C3C=CC(=C4)O
PubChem CID	223998

Physical properties
Physical form	Solid
LogP (XLogP3)	3.8
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	17α-Dihydro Equilenin, 17alpha-Dihydro Equilenin, alpha-Dihydroequilenin, alpha-Dihydroequilenina, .alpha.-Dihydroequilenin, alpha-Estra-1,3,5,7,9-pentaen-3,17-diol, Estra-1,3,5(10),6,8-pentaene-3,17alpha-diol, 17alpha-Dihydroequilenin, Estra-1,3,5,7,9-pentaene-3,17alpha-diol, (1R,3aS,11aS)-11a-methyl-1H,2H,3H,3aH,10H,11H,11aH-cyclopenta[a]phenanthrene-1,7-diol

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Hazard statements

H350May cause cancer
H360May damage fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure

Precautionary statements: P203, P260, P264, P270, P280, P318, P319, 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 17a-Dihydro Equilenin?

The CAS Registry Number of 17a-Dihydro Equilenin is 6639-99-2. It is also known as 17α-Dihydro Equilenin, 17alpha-Dihydro Equilenin, alpha-Dihydroequilenin.

What is the molecular formula and molecular weight of 17a-Dihydro Equilenin?

17a-Dihydro Equilenin has the molecular formula C18H20O2 and a molecular weight of 268.3 g/mol. Its IUPAC name is (13S,14S,17R)-13-methyl-11,12,14,15,16,17-hexahydrocyclopenta[a]phenanthrene-3,17-diol.

What is 17a-Dihydro Equilenin used for?

17a-Dihydro Equilenin is supplied as a characterised reference material related to Equilenin. 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 17a-Dihydro Equilenin can I order?

We supply 17a-Dihydro Equilenin 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 17a-Dihydro Equilenin?

Yes. Every lot of 17a-Dihydro Equilenin 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 17a-Dihydro Equilenin be shipped internationally?

Yes. 17a-Dihydro Equilenin 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.