a,a’-Paraxylyl Bismethanethiosulfonate CAS 3948-46-7

Purity 97%+In StockPharmaceutical Standards
CAS No.3948-46-7
Molecular FormulaC10H14O4S4
Molecular Weight326.48 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

a,a’-Paraxylyl Bismethanethiosulfonate CAS 3948-46-7 chemical structure

Description

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.

a,a’-Paraxylyl Bismethanethiosulfonate (CAS 3948-46-7), molecular formula C10H14O4S4 and molecular weight 326.48 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of a,a’-Paraxylyl Bismethanethiosulfonate (C10H14O4S4) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

Physical & Chemical Properties

Molecular FormulaC10H14O4S4
Molecular Weight326.48 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958
Sulfur Atoms4

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