3,4-Dimethyl-1H-pyrazole HCl CAS 202842-99-7

Description

Compared with other compounds in its class, the molecular weight of 132.59 g/mol gives 3,4-Dimethyl-1H-pyrazole HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3,4-Dimethyl-1H-pyrazole HCl (CAS 202842-99-7), molecular formula C5H8N2HCl and molecular weight 132.59 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 3,4-Dimethyl-1H-pyrazole HCl (C5H8N2HCl) contains a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 132.59 g/mol, it falls into the low-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.

As a certified reference material (CRM), 3,4-Dimethyl-1H-pyrazole HCl 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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