3-Chloro-4-hydroxy-5-nitrobenzenesulfonic acid CAS 83732-61-0

Purity 97%+In StockPharmaceutical Standards
CAS No.83732-61-0
Molecular FormulaC6H4ClNO6S
Molecular Weight253.62 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Chloro-4-hydroxy-5-nitrobenzenesulfonic acid CAS 83732-61-0 chemical structure

Description

The occurrence of 3-Chloro-4-hydroxy-5-nitrobenzenesulfonic acid is closely related to a carbohydrate-derived structure, an amide group, a sulfone group, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 3-Chloro-4-hydroxy-5-nitrobenzenesulfonic acid (CAS 83732-61-0), a certified reference material (molecular formula C6H4ClNO6S, MW 253.62 g/mol) for analytical method development and quality control.

3-Chloro-4-hydroxy-5-nitrobenzenesulfonic acid (C6H4ClNO6S) contains a carbohydrate-derived structure, an amide group, a sulfone group, chlorine 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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.

As a certified reference material (CRM), 3-Chloro-4-hydroxy-5-nitrobenzenesulfonic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC6H4ClNO6S
Molecular Weight253.62 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 methanol, ethanol, DMSO, water
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
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1980
Halogen ContentCl-containing
Nitrogen Atoms1
Sulfur Atoms1

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