4-(((4-Chlorobenzyl)sulfonyl)methyl)-3,5-dimethylisoxazole CAS 303985-23-1

Purity 97%+In StockPharmaceutical Standards
CAS No.303985-23-1
Molecular FormulaC13H14ClNO3S
Molecular Weight299.77 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-(((4-Chlorobenzyl)sulfonyl)methyl)-3,5-dimethylisoxazole CAS 303985-23-1 chemical structure

Description

The occurrence of 4-(((4-Chlorobenzyl)sulfonyl)methyl)-3,5-dimethylisoxazole is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4-(((4-Chlorobenzyl)sulfonyl)methyl)-3,5-dimethylisoxazole (CAS 303985-23-1) is a high-purity analytical reference standard with the molecular formula C13H14ClNO3S and a molecular weight of 299.77 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 4-(((4-Chlorobenzyl)sulfonyl)methyl)-3,5-dimethylisoxazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 299.77 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

As a certified reference material (CRM), 4-(((4-Chlorobenzyl)sulfonyl)methyl)-3,5-dimethylisoxazole 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 FormulaC13H14ClNO3S
Molecular Weight299.77 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 chloroform, dichloromethane, ethyl acetate, DMSO
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.)2025
Halogen ContentCl-containing
Nitrogen Atoms1
Sulfur Atoms1

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