4-(Hydroxyamino)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one CAS 66266-83-9

Description

Compared with other compounds in its class, the molecular weight of 205.21 g/mol gives 4-(Hydroxyamino)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-(Hydroxyamino)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 66266-83-9) is a high-purity analytical reference standard with the molecular formula C10H11N3O2 and a molecular weight of 205.21 g/mol.

Based on its molecular formula C10H11N3O2, 4-(Hydroxyamino)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one 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 205.21 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).

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.

CATO manufactures 4-(Hydroxyamino)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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