Mesterolone EP Impurity B

Name: Mesterolone EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-031803

About Mesterolone EP Impurity B

Mesterolone EP Impurity B (CAS 4011-44-3) is a pharmacopeial impurity of Mesterolone offered by Vaqora Chemicals. The compound has the formula C20H34O2, corresponding to a molecular weight of 306.5 g/mol. Common synonyms include Mesterolone - Impurity B and Mesterolone impurity B.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

As a characterised impurity of Mesterolone, 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.

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 Mesterolone

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

Mesterolone impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Mesterolone EP Impurity B
Catalogue No.	VQ-031803
CAS Number	4011-44-3
IUPAC name	(1S,3S,5S,8R,9S,10S,13S,14S,17S)-1,10,13-trimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,17-diol
Molecular formula	C₂₀H₃₄O₂
Molecular weight	306.5 g/mol
Exact mass	306.2559
Grade	Reference Standard
HSN code	38229090
InChIKey	CYBREHOEFDYISP-AYWFNIBGSA-N
SMILES	C[C@H]1C[C@@H](C[C@H]2[C@]1([C@H]3CC[C@]4([C@H]([C@@H]3CC2)CC[C@@H]4O)C)C)O
PubChem CID	102324219

Physical properties
Physical form	Solid
LogP (XLogP3)	4.6
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	Mesterolone - Impurity B, 1alpha-methyl-5alpha-androstane-3beta,17beta-diol, (1alpha,3beta,5alpha,17beta)-1-methylandrostane-3,17-diol, Androstane-3,17-diol, 1-methyl-, (1alpha,3beta,5alpha,17beta)-, Mesterolone impurity B, (1a,3b,5a,17b)-1-Methylandrostane-3,17-diol

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 Mesterolone EP Impurity B?

The CAS Registry Number of Mesterolone EP Impurity B is 4011-44-3. It is also known as Mesterolone - Impurity B, 1alpha-methyl-5alpha-androstane-3beta,17beta-diol, (1alpha,3beta,5alpha,17beta)-1-methylandrostane-3,17-diol.

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

Mesterolone EP Impurity B has the molecular formula C20H34O2 and a molecular weight of 306.5 g/mol. Its IUPAC name is (1S,3S,5S,8R,9S,10S,13S,14S,17S)-1,10,13-trimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,17-diol.

What is Mesterolone EP Impurity B used for?

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

We supply Mesterolone 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 Mesterolone EP Impurity B?

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

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