2-Methoxy-5-methylbenzenesulfonyl Chloride CAS 88040-86-2

Purity 97%+In StockPharmaceutical Standards
CAS No.88040-86-2
Molecular FormulaC8H9ClO3S
Molecular Weight220.67 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Methoxy-5-methylbenzenesulfonyl Chloride CAS 88040-86-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 220.67 g/mol gives 2-Methoxy-5-methylbenzenesulfonyl Chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-Methoxy-5-methylbenzenesulfonyl Chloride (CAS 88040-86-2), molecular formula C8H9ClO3S and molecular weight 220.67 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2-Methoxy-5-methylbenzenesulfonyl Chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 220.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), 2-Methoxy-5-methylbenzenesulfonyl Chloride 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 FormulaC8H9ClO3S
Molecular Weight220.67 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; 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.)1982
Halogen ContentCl-containing
Sulfur Atoms1

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