1,4-Diethyl-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine CAS 72128-57-5

Description

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.

1,4-Diethyl-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (CAS 72128-57-5), molecular formula C11H17N3 and molecular weight 191.27 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C11H17N3, 1,4-Diethyl-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 191.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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