1-Chloro-4-(3,5-dimethyl-pyrazol-1-yl)-phthalazine CAS 957503-48-9

Description

Compared with other compounds in its class, the molecular weight of 258.71 g/mol gives 1-Chloro-4-(3,5-dimethyl-pyrazol-1-yl)-phthalazine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 1-Chloro-4-(3,5-dimethyl-pyrazol-1-yl)-phthalazine (CAS 957503-48-9), a certified reference material (molecular formula C13H11ClN4, MW 258.71 g/mol) for analytical method development and quality control.

Structurally, 1-Chloro-4-(3,5-dimethyl-pyrazol-1-yl)-phthalazine (C13H11ClN4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 258.71 g/mol, it falls into the medium-molecular-weight range. 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.

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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com