2,5-Dichloro-4-fluorobenzenesulfonyl chloride CAS 13656-50-3

Purity 97%+In StockPharmaceutical Standards
CAS No.13656-50-3
Molecular FormulaC6H2Cl3FO2S
Molecular Weight263.50 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,5-Dichloro-4-fluorobenzenesulfonyl chloride CAS 13656-50-3 chemical structure

Description

2,5-Dichloro-4-fluorobenzenesulfonyl chloride (CAS 13656-50-3) is a high-purity analytical reference standard with the molecular formula C6H2Cl3FO2S and a molecular weight of 263.50 g/mol.

Structurally, 2,5-Dichloro-4-fluorobenzenesulfonyl chloride (C6H2Cl3FO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 263.50 g/mol, it falls into the medium-molecular-weight range. 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.

CATO manufactures 2,5-Dichloro-4-fluorobenzenesulfonyl chloride 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 FormulaC6H2Cl3FO2S
Molecular Weight263.50 g/mol
Purity97%+
StorageStore at room temperature, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1960
Halogen ContentF/Cl-containing
Sulfur Atoms1

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