Estriol EP Impurity A

Name: Estriol EP Impurity A
Brand: Vaqora Chemicals
SKU: VQ-022567

About Estriol EP Impurity A

Vaqora Chemicals supplies Estriol EP Impurity A, a pharmacopeial impurity of Estriol registered under CAS number 246021-20-5. Its molecular formula is C18H22O3 and its molecular weight is 286.4 g/mol. Systematically, it is named (8S,13S,14S,16R,17R)-13-methyl-6,7,8,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,16,17-triol. It is also known as 9,11-Didehydrooestriol or Estriol Impurity A.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Pharmaceutical QC and development laboratories use this impurity standard of Estriol to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Estriol EP Impurity A is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Estriol

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

Estriol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Estriol EP Impurity A
Catalogue No.	VQ-022567
CAS Number	246021-20-5
IUPAC name	(8S,13S,14S,16R,17R)-13-methyl-6,7,8,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,16,17-triol
Molecular formula	C₁₈H₂₂O₃
Molecular weight	286.4 g/mol
Exact mass	286.1569
Grade	Reference Standard
HSN code	38229090
InChIKey	ZWHFPHWLYUMTGY-WKULXVSPSA-N
SMILES	C[C@]12CC=C3[C@H]([C@@H]1C[C@H]([C@@H]2O)O)CCC4=C3C=CC(=C4)O
PubChem CID	9925903

Physical properties
Physical form	Solid
LogP (XLogP3)	2.4
H-bond donors / acceptors	3 / 3
TPSA	60.7 Å²
Synonyms	9,11-Didehydrooestriol, Estriol Impurity A, Estriol - Impurity A, 9(11)-Didehydroestriol, Estra-1,3,5(10),9(11)-tetraene-3,16alpha,17beta-triol, Estra-1,3,5(10),9(11)-tetraene-3,16,17-triol, Estra-1,3,5(10),9(11)-tetraene-3,16,17-triol, (16alpha,17beta)-, Estra-1,3,5(10),9(11)-tetraene-3,16alpha,17beta-triol (9,11-Didehydroestriol)

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 Estriol EP Impurity A?

The CAS Registry Number of Estriol EP Impurity A is 246021-20-5. It is also known as 9,11-Didehydrooestriol, Estriol Impurity A, Estriol - Impurity A.

What is the molecular formula and molecular weight of Estriol EP Impurity A?

Estriol EP Impurity A has the molecular formula C18H22O3 and a molecular weight of 286.4 g/mol. Its IUPAC name is (8S,13S,14S,16R,17R)-13-methyl-6,7,8,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,16,17-triol.

What is Estriol EP Impurity A used for?

Estriol EP Impurity A is supplied as a characterised reference material related to Estriol. 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 Estriol EP Impurity A can I order?

We supply Estriol EP Impurity A 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 Estriol EP Impurity A?

Yes. Every lot of Estriol EP Impurity A 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 Estriol EP Impurity A be shipped internationally?

Yes. We export Estriol EP Impurity A worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.