3-Bromo-2-methyl-7-(thiophen-2-yl)pyrazolo[1,5-a]pyrimidine CAS 439107-63-8

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.

3-Bromo-2-methyl-7-(thiophen-2-yl)pyrazolo[1,5-a]pyrimidine (CAS 439107-63-8), molecular formula C11H8BrN3S and molecular weight 294.17 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 3-Bromo-2-methyl-7-(thiophen-2-yl)pyrazolo[1,5-a]pyrimidine (C11H8BrN3S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 294.17 g/mol, it falls into the medium-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.

As a certified reference material (CRM), 3-Bromo-2-methyl-7-(thiophen-2-yl)pyrazolo[1,5-a]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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