5870-38-2 Diethyl 2,5-dihydroxyterephthalate 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, 1,4-diethyl ester 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, diethyl ester 2,5-Dihydroxyterephthalic acid diethyl ester EINECS 227-522-3 NSC 177975 Terephthalic acid, 2,5-dihydroxy-, diethyl ester CAS 5870-38-2

Purity 97%+In StockPharmaceutical Standards
CAS No.5870-38-2
Molecular FormulaC12H20O6
Molecular Weight260.28 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5870-38-2 Diethyl 2,5-dihydroxyterephthalate 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, 1,4-diethyl ester 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, diethyl ester 2,5-Dihydroxyterephthalic acid diethyl ester EINECS 227-522-3 NSC 177975 Terephthalic acid, 2,5-dihydroxy-, diethyl ester CAS 5870-38-2 chemical structure

Description

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 supplies 5870-38-2 Diethyl 2,5-dihydroxyterephthalate 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, 1,4-diethyl ester 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, diethyl ester 2,5-Dihydroxyterephthalic acid diethyl ester EINECS 227-522-3 NSC 177975 Terephthalic acid, 2,5-dihydroxy-, diethyl ester (CAS 5870-38-2), a certified reference material (molecular formula C12H20O6, MW 260.28 g/mol) for analytical method development and quality control.

The molecular framework of 5870-38-2 Diethyl 2,5-dihydroxyterephthalate 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, 1,4-diethyl ester 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, diethyl ester 2,5-Dihydroxyterephthalic acid diethyl ester EINECS 227-522-3 NSC 177975 Terephthalic acid, 2,5-dihydroxy-, diethyl ester (C12H20O6) is characterized by a carboxylic acid 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).

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.

Physical & Chemical Properties

Molecular FormulaC12H20O6
Molecular Weight260.28 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1958

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