Estriol EP Impurity E

Name: Estriol EP Impurity E
Brand: Vaqora Chemicals
SKU: VQ-022566

About Estriol EP Impurity E

Vaqora Chemicals supplies Estriol EP Impurity E, a pharmacopeial impurity of Estriol registered under CAS number 1228-72-4. With the molecular formula C18H24O3, it has a molar mass of 288.4 g/mol. The IUPAC name is (8R,9S,13S,14S,16R,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,16,17-triol. Alternative names: 17-Epiestriol and Estriol - Impurity E.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Danger” with 3 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of Estriol, 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

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 E
Catalogue No.	VQ-022566
CAS Number	1228-72-4
IUPAC name	(8R,9S,13S,14S,16R,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,16,17-triol
Molecular formula	C₁₈H₂₄O₃
Molecular weight	288.4 g/mol
Exact mass	288.1725
Grade	Reference Standard
HSN code	38229090
InChIKey	PROQIPRRNZUXQM-PNVOZDDCSA-N
SMILES	C[C@]12CC[C@H]3[C@H]([C@@H]1C[C@H]([C@H]2O)O)CCC4=C3C=CC(=C4)O
PubChem CID	256737

Physical properties
Physical form	Solid
LogP (XLogP3)	2.5
H-bond donors / acceptors	3 / 3
TPSA	60.7 Å²
Synonyms	17-Epiestriol, Estriol - Impurity E, 17alpha-Estriol, 16alpha-Hydroxy-17alpha-estradiol, 1,3,5(10)-Estratriene-3,16alpha,17alpha-triol, estra-1(10),2,4-triene-3,16alpha,17alpha-triol, 3,16alpha,17alpha-Trihydroxy-1,3,5(10)-estratriene, (16alpha,17alpha)-estra-1(10),2,4-triene-3,16,17-triol, Estra-1,3,5(10)-triene-3,16,17-triol, (16alpha,17alpha)-, 16a,17a-Estriol, (16alpha,17alpha)-Estra-1,3,5(10)-Triene-3,16,17-Triol, 16a-Hydroxy-17a-estradiol

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 Estriol EP Impurity E?

The CAS Registry Number of Estriol EP Impurity E is 1228-72-4. It is also known as 17-Epiestriol, Estriol - Impurity E, 17alpha-Estriol.

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

Estriol EP Impurity E has the molecular formula C18H24O3 and a molecular weight of 288.4 g/mol. Its IUPAC name is (8R,9S,13S,14S,16R,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,16,17-triol.

What is Estriol EP Impurity E used for?

Estriol EP Impurity E 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 E can I order?

We supply Estriol EP Impurity E 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 E?

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

Yes. Estriol EP Impurity E 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.