3',3'',5',5''-Tetrabromophenolphthalein ethyl ester, indicator CAS 1176-74-5

Description

The occurrence of 3',3'',5',5''-Tetrabromophenolphthalein ethyl ester, indicator 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 ethyl ester, indicator (CAS 1176-74-5), molecular formula C22H14Br4O4 and molecular weight 661.96 g/mol, is a CATO reference standard with documented purity and traceability.

3',3'',5',5''-Tetrabromophenolphthalein ethyl ester, indicator (C22H14Br4O4) contains a flavonoid core, a hydroxyl group, an ether linkage, bromine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

CATO manufactures 3',3'',5',5''-Tetrabromophenolphthalein ethyl ester, indicator under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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