4-Methoxy-3,3-dimethyl-2-methylene-4-oxobutanoic acid CAS 143225-18-7

Description

4-Methoxy-3,3-dimethyl-2-methylene-4-oxobutanoic acid (CAS 143225-18-7), molecular formula C8H11O4 and molecular weight 171.17 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 4-Methoxy-3,3-dimethyl-2-methylene-4-oxobutanoic acid (C8H11O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 171.17 g/mol, it falls into the medium-molecular-weight range. 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), 4-Methoxy-3,3-dimethyl-2-methylene-4-oxobutanoic 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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