Letrozole EP Impurity B

Name: Letrozole EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-022951

About Letrozole EP Impurity B

Listed under CAS 113402-31-6, Letrozole EP Impurity B is a pharmacopeial impurity of Letrozole available from Vaqora Chemicals. Its molecular formula is C22H13N3 and its molecular weight is 319.4 g/mol. Systematically, it is named 4-[bis(4-cyanophenyl)methyl]benzonitrile. Alternative names: 4,4',4''-Methanetriyltribenzonitrile and Letrozole - 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 Letrozole, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Letrozole EP Impurity B 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 Letrozole

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

Letrozole impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Letrozole EP Impurity B
Catalogue No.	VQ-022951
CAS Number	113402-31-6
IUPAC name	4-[bis(4-cyanophenyl)methyl]benzonitrile
Molecular formula	C₂₂H₁₃N₃
Molecular weight	319.4 g/mol
Exact mass	319.1109
Grade	Reference Standard
HSN code	38229090
InChIKey	NIJQDIWAJCTWAB-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1C#N)C(C2=CC=C(C=C2)C#N)C3=CC=C(C=C3)C#N
PubChem CID	29933425

Physical properties
Physical form	Solid
LogP (XLogP3)	4.5
H-bond donors / acceptors	0 / 3
TPSA	71.4 Å²
Synonyms	4,4',4''-Methanetriyltribenzonitrile, Letrozole - Impurity B, Letrozole specified impurity B, Letrozole Impurity B, Benzonitrile, 4,4',4''-methylidynetris-, 4,4',4''-Methylidenetrisbenzonitrile, 4,4',4''-Methylidynetrisbenzonitrile (Letrozole Impurity), 4,4',4''-Methylidynetrisbenzonitrile, 4,44methyledenetrisbenzonitrile, 4,4',4''-tricyanotriphenylmethane, 4,4\',4\'\'-Methylidynetrisbenzonitrile, 4,4',4"-Methyledenetrisbenzonitrile ( Impurity of Letrozole )

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 Letrozole EP Impurity B?

The CAS Registry Number of Letrozole EP Impurity B is 113402-31-6. It is also known as 4,4',4''-Methanetriyltribenzonitrile, Letrozole - Impurity B, Letrozole specified impurity B.

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

Letrozole EP Impurity B has the molecular formula C22H13N3 and a molecular weight of 319.4 g/mol. Its IUPAC name is 4-[bis(4-cyanophenyl)methyl]benzonitrile.

What is Letrozole EP Impurity B used for?

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

We supply Letrozole 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 Letrozole EP Impurity B?

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

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