4-(4-Chlorobenzenesulfonyl)-1h-pyrazol-5-amine CAS 30036-43-2

Purity 97%+In StockPharmaceutical Standards
CAS No.30036-43-2
Molecular FormulaC9H8ClN3O2S
Molecular Weight257.70 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-(4-Chlorobenzenesulfonyl)-1h-pyrazol-5-amine CAS 30036-43-2 chemical structure

Description

The molecular framework of 4-(4-Chlorobenzenesulfonyl)-1h-pyrazol-5-amine (C9H8ClN3O2S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

CATO supplies 4-(4-Chlorobenzenesulfonyl)-1h-pyrazol-5-amine (CAS 30036-43-2), a certified reference material (molecular formula C9H8ClN3O2S, MW 257.70 g/mol) for analytical method development and quality control.

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 4-(4-Chlorobenzenesulfonyl)-1h-pyrazol-5-amine 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 FormulaC9H8ClN3O2S
Molecular Weight257.70 g/mol
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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965
Halogen ContentCl-containing
Nitrogen Atoms3
Sulfur Atoms1

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