(E)-4-Ethoxy-3-methyl-4-oxobut-2-enoic acid CAS 89966-38-1

Description

(E)-4-Ethoxy-3-methyl-4-oxobut-2-enoic acid (CAS 89966-38-1) is a high-purity analytical reference standard with the molecular formula C7H9O4 and a molecular weight of 157.14 g/mol.

The molecular framework of (E)-4-Ethoxy-3-methyl-4-oxobut-2-enoic acid (C7H9O4) 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).

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), (E)-4-Ethoxy-3-methyl-4-oxobut-2-enoic 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

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