4,7-Dichloro-2-methyl-2H-pyrazolo[3,4-d]pyridazine CAS 2645374-13-4

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,7-Dichloro-2-methyl-2H-pyrazolo[3,4-d]pyridazine.

4,7-Dichloro-2-methyl-2H-pyrazolo[3,4-d]pyridazine (CAS 2645374-13-4), molecular formula C6H4Cl2N4 and molecular weight 203.03 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C6H4Cl2N4, 4,7-Dichloro-2-methyl-2H-pyrazolo[3,4-d]pyridazine contains a nitrile group, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 203.03 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.

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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