Methyl 2-[1-(4-fluorophenyl)-5-oxo-2,5-dihydro-1h-pyrazol-3-yl]acetate CAS 725260-50-4

Description

Structurally, Methyl 2-[1-(4-fluorophenyl)-5-oxo-2,5-dihydro-1h-pyrazol-3-yl]acetate (C12H11FN2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 250.23 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Methyl 2-[1-(4-fluorophenyl)-5-oxo-2,5-dihydro-1h-pyrazol-3-yl]acetate (CAS 725260-50-4), molecular formula C12H11FN2O3 and molecular weight 250.23 g/mol, is a CATO reference standard with documented purity and traceability.

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.

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

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