2-(1-Ethyl-4-nitro-1H-pyrazol-5-yl)acetic acid CAS 1328640-77-2

Description

As a certified reference material (CRM), 2-(1-Ethyl-4-nitro-1H-pyrazol-5-yl)acetic 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.

2-(1-Ethyl-4-nitro-1H-pyrazol-5-yl)acetic acid (CAS 1328640-77-2) is a high-purity analytical reference standard with the molecular formula C7H9N3O4 and a molecular weight of 199.16 g/mol.

Based on its molecular formula C7H9N3O4, 2-(1-Ethyl-4-nitro-1H-pyrazol-5-yl)acetic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 199.16 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.

Physical & Chemical Properties

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