3,4-Dihydropyrimido[5,4-d]pyrimidine CAS 100047-44-7

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3,4-Dihydropyrimido[5,4-d]pyrimidine.

3,4-Dihydropyrimido[5,4-d]pyrimidine (CAS 100047-44-7) is a high-purity analytical reference standard with the molecular formula C6H6N4 and a molecular weight of 134.14 g/mol.

Owing to a nitrile group, an aromatic ring system, 3,4-Dihydropyrimido[5,4-d]pyrimidine is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 134.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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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