N-Nitroso Pirfenidone EP Impurity B

Name: N-Nitroso Pirfenidone EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-027446

About N-Nitroso Pirfenidone EP Impurity B

Vaqora Chemicals supplies N-Nitroso Pirfenidone EP Impurity B, a nitrosamine impurity of Pirfenidone registered under CAS number 2512237-43-1. Formula C6H6N2O2, molecular weight 138.12 g/mol. Systematically, it is named 5-methyl-1-nitrosopyridin-2-one. It is also known as 5-Methyl-1-nitrosopyridin-2(1H)-one or 5-Methyl-1-nitroso-2(1H)-pyridinone.

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. Good laboratory practice and suitable PPE are recommended during handling.

It is used as a reference standard for trace-level detection and quantitation of nitrosamine impurities by LC-MS/MS or GC-MS, supporting nitrosamine risk assessments for Pirfenidone, method validation (AMV) and 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

Nitrosamine risk assessment
Trace LC-MS/MS quantitation
Method validation (AMV)
Regulatory submissions

Industries

Related to Pirfenidone

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

Pirfenidone impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	N-Nitroso Pirfenidone EP Impurity B
Catalogue No.	VQ-027446
CAS Number	2512237-43-1
IUPAC name	5-methyl-1-nitrosopyridin-2-one
Molecular formula	C₆H₆N₂O₂
Molecular weight	138.12 g/mol
Exact mass	138.0429
Grade	Reference Standard
HSN code	38229090
InChIKey	MEWHWYHJUSOYTO-UHFFFAOYSA-N
SMILES	CC1=CN(C(=O)C=C1)N=O
PubChem CID	172967733

Physical properties
Physical form	Solid
H-bond donors / acceptors	0 / 3
TPSA	49.7 Å²

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 N-Nitroso Pirfenidone EP Impurity B?

The CAS Registry Number of N-Nitroso Pirfenidone EP Impurity B is 2512237-43-1. It is also known as 5-Methyl-1-nitrosopyridin-2(1H)-one, 5-Methyl-1-nitroso-2(1H)-pyridinone, 2(1H)-Pyridinone, 5-methyl-1-nitroso-.

What is the molecular formula and molecular weight of N-Nitroso Pirfenidone EP Impurity B?

N-Nitroso Pirfenidone EP Impurity B has the molecular formula C6H6N2O2 and a molecular weight of 138.12 g/mol. Its IUPAC name is 5-methyl-1-nitrosopyridin-2-one.

What is N-Nitroso Pirfenidone EP Impurity B used for?

N-Nitroso Pirfenidone EP Impurity B is supplied as a characterised reference material related to Pirfenidone. 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 N-Nitroso Pirfenidone EP Impurity B can I order?

We supply N-Nitroso Pirfenidone 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 N-Nitroso Pirfenidone EP Impurity B?

Yes. Every lot of N-Nitroso Pirfenidone 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 N-Nitroso Pirfenidone EP Impurity B be shipped internationally?

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