3′,3′′,5′,5′′-Tetrabromophenolphthalein CAS 1301-20-8

Description

The occurrence of 3′,3′′,5′,5′′-Tetrabromophenolphthalein is closely related to a flavonoid core, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

3′,3′′,5′,5′′-Tetrabromophenolphthalein (CAS 1301-20-8), molecular formula C20H10Br4O4 and molecular weight 633.91 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 3′,3′′,5′,5′′-Tetrabromophenolphthalein (C20H10Br4O4) is characterized by a flavonoid core, a hydroxyl group, an ether linkage, bromine substitution. 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.

As a certified reference material (CRM), 3′,3′′,5′,5′′-Tetrabromophenolphthalein 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

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