4,5-Dimethylpyrimidine CAS 694-81-5

Description

Compared with other compounds in its class, the molecular weight of 108.14 g/mol gives 4,5-Dimethylpyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 4,5-Dimethylpyrimidine (CAS 694-81-5), a certified reference material (molecular formula C6H8N2, MW 108.14 g/mol) for analytical method development and quality control.

Structurally, 4,5-Dimethylpyrimidine (C6H8N2) contains a nitrile group, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 108.14 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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