3,3',3''-Phosphinetriyltribenzenesulfonic acid CAS 91171-35-6

Purity 97%+In StockPharmaceutical Standards
CAS No.91171-35-6
Molecular FormulaC18H15O9PS3
Molecular Weight502.48 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3,3',3''-Phosphinetriyltribenzenesulfonic acid CAS 91171-35-6 chemical structure

Description

The occurrence of 3,3',3''-Phosphinetriyltribenzenesulfonic acid is closely related to a flavonoid core, a sulfone group, a phosphate ester group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 3,3',3''-Phosphinetriyltribenzenesulfonic acid (CAS 91171-35-6), a certified reference material (molecular formula C18H15O9PS3, MW 502.48 g/mol) for analytical method development and quality control.

The molecular framework of 3,3',3''-Phosphinetriyltribenzenesulfonic acid (C18H15O9PS3) is characterized by a flavonoid core, a sulfone group, a phosphate ester group, a hydroxyl group, an ether linkage. 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 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).

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), 3,3',3''-Phosphinetriyltribenzenesulfonic acid 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 FormulaC18H15O9PS3
Molecular Weight502.48 g/mol
Purity97%+
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1983
Sulfur Atoms3

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