17-Alpha-Dihydro Equilin

Name: 17-Alpha-Dihydro Equilin
Brand: Vaqora Chemicals
SKU: VQ-025628

About 17-Alpha-Dihydro Equilin

Vaqora Chemicals supplies 17-Alpha-Dihydro Equilin, an impurity of Equilin registered under CAS number 651-55-8. The compound has the formula C18H22O2, corresponding to a molecular weight of 270.4 g/mol. Its systematic (IUPAC) name is (9S,13S,14S,17R)-13-methyl-6,9,11,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,17-diol. Common synonyms include 17α-Dihydro Equilin and Estra-1,3,5(10),7-tetraene-3,17alpha-diol.

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 “Warning” with 2 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of Equilin, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 17-Alpha-Dihydro Equilin 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 Equilin

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

Equilin impurities

Specifications & identifiers

Chemical identifiers
Product name	17-Alpha-Dihydro Equilin
Catalogue No.	VQ-025628
CAS Number	651-55-8
IUPAC name	(9S,13S,14S,17R)-13-methyl-6,9,11,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,17-diol
Molecular formula	C₁₈H₂₂O₂
Molecular weight	270.4 g/mol
Exact mass	270.162
Grade	Reference Standard
HSN code	38229090
InChIKey	NLLMJANWPUQQTA-SPUZQDLCSA-N
SMILES	C[C@]12CC[C@H]3C(=CCC4=C3C=CC(=C4)O)[C@@H]1CC[C@H]2O
PubChem CID	9547222

Physical properties
Physical form	Solid
LogP (XLogP3)	3.2
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	17α-Dihydro Equilin, Estra-1,3,5(10),7-tetraene-3,17alpha-diol, alpha-Dihydroequilin, alpha-Equilol, Dihydroequilin 17alpha-form, Estra-1,3,5(10),7-tetraene-3,17.alpha.-diol, Estra-1,3,5(10),7-tetraene-3,17-diol, (17.alpha.)-, Estra-1,3,5(10),7-tetraene-3,17-diol, (17alpha)-, 17a-Dihydro Equilin, Dihydroequilin

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary statements: P264, P264 + P265, P280, P302 + P352, P305 + P351 + P338, P321, P332 + P317, P337 + P317, P362 + P364

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 17-Alpha-Dihydro Equilin?

The CAS Registry Number of 17-Alpha-Dihydro Equilin is 651-55-8. It is also known as 17α-Dihydro Equilin, Estra-1,3,5(10),7-tetraene-3,17alpha-diol, alpha-Dihydroequilin.

What is the molecular formula and molecular weight of 17-Alpha-Dihydro Equilin?

17-Alpha-Dihydro Equilin has the molecular formula C18H22O2 and a molecular weight of 270.4 g/mol. Its IUPAC name is (9S,13S,14S,17R)-13-methyl-6,9,11,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,17-diol.

What is 17-Alpha-Dihydro Equilin used for?

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

We supply 17-Alpha-Dihydro Equilin 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 17-Alpha-Dihydro Equilin?

Yes. Every lot of 17-Alpha-Dihydro Equilin 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 17-Alpha-Dihydro Equilin be shipped internationally?

Yes. 17-Alpha-Dihydro Equilin 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.