3-(Phenylamino)-4,5-dihydro-1h-pyrazol-5-one CAS 7186-81-4

Description

Compared with other compounds in its class, the molecular weight of 175.19 g/mol gives 3-(Phenylamino)-4,5-dihydro-1h-pyrazol-5-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3-(Phenylamino)-4,5-dihydro-1h-pyrazol-5-one (CAS 7186-81-4), molecular formula C9H9N3O and molecular weight 175.19 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C9H9N3O, 3-(Phenylamino)-4,5-dihydro-1h-pyrazol-5-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 175.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

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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