Estradiol valerate EP Impurity B

Name: Estradiol valerate EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-025620

About Estradiol valerate EP Impurity B

Vaqora Chemicals supplies Estradiol valerate EP Impurity B, a pharmacopeial impurity of Estradiol registered under CAS number 21881-45-8. Its molecular formula is C23H32O3 and its molecular weight is 356.5 g/mol. It is also known as Estradiol 3-Valerate or Estradiol Valerate - Impurity B.

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 2 hazard statements. Review the Safety Data Sheet before use.

This Estradiol impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from 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 Estradiol

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

Estradiol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Estradiol valerate EP Impurity B
Catalogue No.	VQ-025620
CAS Number	21881-45-8
IUPAC name	[(8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl] pentanoate
Molecular formula	C₂₃H₃₂O₃
Molecular weight	356.5 g/mol
Exact mass	356.2351
Grade	Reference Standard
HSN code	38229090
InChIKey	IFDPLCRWEBQEAJ-RBRWEJTLSA-N
SMILES	CCCCC(=O)OC1=CC2=C(C=C1)[C@H]3CC[C@]4([C@H]([C@@H]3CC2)CC[C@@H]4O)C
PubChem CID	14653378

Physical properties
Physical form	Solid
LogP (XLogP3)	4.2
H-bond donors / acceptors	1 / 3
TPSA	46.5 Å²
Synonyms	Estradiol 3-Valerate, Estradiol Valerate - Impurity B, Estradiol, 3-valerate, Estra-1,3,5(10)-trien-17beta-ol 3-valerate, Estra-1,3,5(10)-triene-3,17-diol (17beta)-, 3-pentanoate, 3-Hydroxy-4-methylestra-1,3,5(10)-trien-17beta-yl pentanoate, Estradiol valerate impurity B, 17beta-Hydroxyestra-1,3,5(10)-trien-3-yl pentanoate, 17beta-Hydroxyestra-1,3,5(10)-trien-3-yl Pentanoate (Estradiol 3-Valerate)

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H341Suspected of causing genetic defects

Precautionary statements: P203, P264, P270, P280, P301 + P317, P318, P330, 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 Estradiol valerate EP Impurity B?

The CAS Registry Number of Estradiol valerate EP Impurity B is 21881-45-8. It is also known as Estradiol 3-Valerate, Estradiol Valerate - Impurity B, Estradiol, 3-valerate.

What is the molecular formula and molecular weight of Estradiol valerate EP Impurity B?

Estradiol valerate EP Impurity B has the molecular formula C23H32O3 and a molecular weight of 356.5 g/mol. Its IUPAC name is [(8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl] pentanoate.

What is Estradiol valerate EP Impurity B used for?

Estradiol valerate EP Impurity B is supplied as a characterised reference material related to Estradiol. 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 Estradiol valerate EP Impurity B can I order?

We supply Estradiol valerate EP Impurity B 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 Estradiol valerate EP Impurity B?

Yes. Every lot of Estradiol valerate EP Impurity B 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 Estradiol valerate EP Impurity B be shipped internationally?

Yes. Estradiol valerate EP Impurity B 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.