4-{[(4-chlorophenyl)amino]methylidene}-3-methyl-4,5-dihydro-1H-pyrazol-5-one CAS 339020-89-2

Description

Based on its molecular formula C11H10ClN3O, 4-{[(4-chlorophenyl)amino]methylidene}-3-methyl-4,5-dihydro-1H-pyrazol-5-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 235.67 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).

4-{[(4-chlorophenyl)amino]methylidene}-3-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 339020-89-2), molecular formula C11H10ClN3O and molecular weight 235.67 g/mol, is a CATO reference standard with documented purity and traceability.

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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