Fmoc-R-3-amino-4-(3,4-difluorophenyl)-butyric acid CAS 269396-60-3

Description

The occurrence of Fmoc-R-3-amino-4-(3,4-difluorophenyl)-butyric acid is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Fmoc-R-3-amino-4-(3,4-difluorophenyl)-butyric acid (CAS 269396-60-3), molecular formula C25H21F2NO4 and molecular weight 437.44 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C25H21F2NO4, Fmoc-R-3-amino-4-(3,4-difluorophenyl)-butyric acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 437.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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