Estriol EP Impurity K

Name: Estriol EP Impurity K
Brand: Vaqora Chemicals
SKU: VQ-025641

About Estriol EP Impurity K

Estriol EP Impurity K is a pharmacopeial impurity of Estrone carrying the CAS registry number 901-93-9. The compound has the formula C20H24O3, corresponding to a molecular weight of 312.4 g/mol. Its systematic (IUPAC) name is [(8R,9S,13S,14S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] acetate. Alternative names: Estrone Acetate and Estrone 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. It carries the GHS signal word “Danger” with 9 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of Estrone, 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.

Vaqora Chemicals supplies Estriol EP Impurity K in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Related to Estrone

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

Estrone impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Estriol EP Impurity K
Catalogue No.	VQ-025641
CAS Number	901-93-9
IUPAC name	[(8R,9S,13S,14S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] acetate
Molecular formula	C₂₀H₂₄O₃
Molecular weight	312.4 g/mol
Exact mass	312.1725
Grade	Reference Standard
HSN code	38229090
InChIKey	KDPQTPZDVJHMET-XSYGEPLQSA-N
SMILES	CC(=O)OC1=CC2=C(C=C1)[C@H]3CC[C@]4([C@H]([C@@H]3CC2)CCC4=O)C
PubChem CID	92846

Physical properties
Physical form	Solid
LogP (XLogP3)	3.2
H-bond donors / acceptors	0 / 3
TPSA	43.4 Å²
Synonyms	Estrone Acetate, Estrone 3-Acetate, Estriol - Impurity K, Hogival, Acetoxyestrone, Puboestrene, Estra-1,3,5(10)-trien-17-one, 3-(acetyloxy)-, 3-acetoxy-17-oxo-1,3,5(10)-estratriene, Oestrone-3-acetate, 3-Acetoxyestrone, 3-Acetoxyestrone R, 17-oxoestra-1,3,5(10)-trien-3-yl acetate

Safety & hazard information (GHS)

Toxic

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H311Toxic in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H331Toxic if inhaled
H335May cause respiratory irritation
H351Suspected of causing cancer
H360May damage fertility or the unborn child
H362May cause harm to breast-fed children

Precautionary statements: P203, P260, P261, P262, P263, P264, P264 + P265, P270, P271, P280, P301 + P316, P302 + P352, P304 + P340, P305 + P351 + P338, P316, P318, P319, P321, P330, P332 + P317, P337 + P317, P361 + P364, P362 + P364, P403 + P233

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 K?

The CAS Registry Number of Estriol EP Impurity K is 901-93-9. It is also known as Estrone Acetate, Estrone 3-Acetate, Estriol - Impurity K.

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

Estriol EP Impurity K has the molecular formula C20H24O3 and a molecular weight of 312.4 g/mol. Its IUPAC name is [(8R,9S,13S,14S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] acetate.

What is Estriol EP Impurity K used for?

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

We supply Estriol EP Impurity K 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 K?

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

Yes. Estriol EP Impurity K 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.