1-Nitroso-1H-Pyrazole

Name: 1-Nitroso-1H-Pyrazole
Brand: Vaqora Chemicals
SKU: VQ-040284

About 1-Nitroso-1H-Pyrazole

1-Nitroso-1H-Pyrazole (CAS 146830-66-2) is a nitrosamine impurity standard offered by Vaqora Chemicals. Formula C3H3N3O, molecular weight 97.08 g/mol. The IUPAC name is 1-nitrosopyrazole.

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.

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, method validation (AMV) and regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer 1-Nitroso-1H-Pyrazole in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

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

Industries

Specifications & identifiers

Chemical identifiers
Product name	1-Nitroso-1H-Pyrazole
Catalogue No.	VQ-040284
CAS Number	146830-66-2
IUPAC name	1-nitrosopyrazole
Molecular formula	C₃H₃N₃O
Molecular weight	97.08 g/mol
Exact mass	97.0276
Grade	Reference Standard
HSN code	38229090
InChIKey	JAPVPVOBIHCTFQ-UHFFFAOYSA-N
SMILES	C1=CN(N=C1)N=O
PubChem CID	18444046

Physical properties
Physical form	Solid
H-bond donors / acceptors	0 / 3
TPSA	47.3 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 1-Nitroso-1H-Pyrazole?

The CAS Registry Number of 1-Nitroso-1H-Pyrazole is 146830-66-2.

What is the molecular formula and molecular weight of 1-Nitroso-1H-Pyrazole?

1-Nitroso-1H-Pyrazole has the molecular formula C3H3N3O and a molecular weight of 97.08 g/mol. Its IUPAC name is 1-nitrosopyrazole.

Which grade and pack sizes of 1-Nitroso-1H-Pyrazole can I order?

We supply 1-Nitroso-1H-Pyrazole 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 1-Nitroso-1H-Pyrazole?

Yes. Every lot of 1-Nitroso-1H-Pyrazole 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 1-Nitroso-1H-Pyrazole be shipped internationally?

Yes. We export 1-Nitroso-1H-Pyrazole worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.