5-Methyl-1-(2-nitrophenyl)-1H-pyrazol-3(2H)-one CAS 67916-05-6

Description

Compared with other compounds in its class, the molecular weight of 219.20 g/mol gives 5-Methyl-1-(2-nitrophenyl)-1H-pyrazol-3(2H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-Methyl-1-(2-nitrophenyl)-1H-pyrazol-3(2H)-one (CAS 67916-05-6) is a high-purity analytical reference standard with the molecular formula C10H9N3O3 and a molecular weight of 219.20 g/mol.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-Methyl-1-(2-nitrophenyl)-1H-pyrazol-3(2H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 219.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 5-Methyl-1-(2-nitrophenyl)-1H-pyrazol-3(2H)-one 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.

Physical & Chemical Properties

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