2,5-Dibromo-4-nitropyridine CAS 221241-31-2

Purity 97%+In StockPharmaceutical Standards
CAS No.221241-31-2
Molecular FormulaC5H2Br2N2O2
Molecular Weight281.89 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,5-Dibromo-4-nitropyridine CAS 221241-31-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 281.89 g/mol gives 2,5-Dibromo-4-nitropyridine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 2,5-Dibromo-4-nitropyridine (CAS 221241-31-2), a certified reference material (molecular formula C5H2Br2N2O2, MW 281.89 g/mol) for analytical method development and quality control.

The molecular framework of 2,5-Dibromo-4-nitropyridine (C5H2Br2N2O2) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures 2,5-Dibromo-4-nitropyridine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC5H2Br2N2O2
Molecular Weight281.89 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)2020
Halogen ContentBr-containing
Nitrogen Atoms2

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