1-(4-Methoxy-3-nitrophenyl)-1H-pyrrole-2,5-dione CAS 199583-64-7

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.

1-(4-Methoxy-3-nitrophenyl)-1H-pyrrole-2,5-dione (CAS 199583-64-7), molecular formula C11H8N2O5 and molecular weight 248.19 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 1-(4-Methoxy-3-nitrophenyl)-1H-pyrrole-2,5-dione (C11H8N2O5) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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