4-Bromo-1-[4-(1-pyrrolidinylsulfonyl)phenyl]-1H-pyrazole CAS 1187385-91-6

Purity 97%+In StockPharmaceutical Standards
CAS No.1187385-91-6
Molecular FormulaC13H14BrN3O2S
Molecular Weight356.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Bromo-1-[4-(1-pyrrolidinylsulfonyl)phenyl]-1H-pyrazole CAS 1187385-91-6 chemical structure

Description

The occurrence of 4-Bromo-1-[4-(1-pyrrolidinylsulfonyl)phenyl]-1H-pyrazole is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 4-Bromo-1-[4-(1-pyrrolidinylsulfonyl)phenyl]-1H-pyrazole (CAS 1187385-91-6), a certified reference material (molecular formula C13H14BrN3O2S, MW 356.24 g/mol) for analytical method development and quality control.

4-Bromo-1-[4-(1-pyrrolidinylsulfonyl)phenyl]-1H-pyrazole (C13H14BrN3O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC13H14BrN3O2S
Molecular Weight356.24 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1989
Halogen ContentBr-containing
Nitrogen Atoms3
Sulfur Atoms1

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