N-[(E)-(5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)methylidene]-N-[(4-nitrobenzoyl)oxy]amine CAS 303987-98-6

Description

Compared with other compounds in its class, the molecular weight of 322.70 g/mol gives N-[(E)-(5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)methylidene]-N-[(4-nitrobenzoyl)oxy]amine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

N-[(E)-(5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)methylidene]-N-[(4-nitrobenzoyl)oxy]amine (CAS 303987-98-6) is a high-purity analytical reference standard with the molecular formula C13H11ClN4O4 and a molecular weight of 322.70 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, N-[(E)-(5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)methylidene]-N-[(4-nitrobenzoyl)oxy]amine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 322.70 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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