4-ethoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine CAS 1258652-32-2

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-ethoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine.

4-ethoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine (CAS 1258652-32-2), molecular formula C9H13N3O and molecular weight 179.22 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 4-ethoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine (C9H13N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 179.22 g/mol, it falls into the medium-molecular-weight range. 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.

As a certified reference material (CRM), 4-ethoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine 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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