Salicylic Acid Impurity 6 CAS 2731926-23-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.2731926-23-9
Molecular FormulaC11H14O6S
Molecular Weight274.29 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Salicylic Acid Impurity 6 CAS 2731926-23-9 chemical structure

Description

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

Salicylic Acid Impurity 6 (CAS 2731926-23-9) is a certified pharmaceutical impurity reference standard with the molecular formula C11H14O6S and a molecular weight of 274.29 g/mol.

The molecular framework of Salicylic Acid Impurity 6 (C11H14O6S) 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 the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

As a certified reference material (CRM), Salicylic Acid Impurity 6 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 FormulaC11H14O6S
Molecular Weight274.29 g/mol
Purity>95%
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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2002
Sulfur Atoms1

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