4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl CAS 66640-61-7

Description

Compared with other compounds in its class, the molecular weight of 404.52 g/mol gives 4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl (CAS 66640-61-7), molecular formula C13H7Cl5O2S and molecular weight 404.52 g/mol, is a CATO reference standard with documented purity and traceability.

4-Methylsulfonyl-2,2',4',5,5'-pentachlorobiphenyl (C13H7Cl5O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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