3-Chloro-7-(4-fluorophenyl)-2-methylpyrazolo[1,5-a]pyrimidine CAS 676333-55-4

Description

The occurrence of 3-Chloro-7-(4-fluorophenyl)-2-methylpyrazolo[1,5-a]pyrimidine is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 3-Chloro-7-(4-fluorophenyl)-2-methylpyrazolo[1,5-a]pyrimidine (CAS 676333-55-4), a certified reference material (molecular formula C13H9ClFN3, MW 261.68 g/mol) for analytical method development and quality control.

Based on its molecular formula C13H9ClFN3, 3-Chloro-7-(4-fluorophenyl)-2-methylpyrazolo[1,5-a]pyrimidine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 261.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

As a certified reference material (CRM), 3-Chloro-7-(4-fluorophenyl)-2-methylpyrazolo[1,5-a]pyrimidine 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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