(4-Bromo-5-ethyl-1-methyl-1H-pyrazol-3-yl)methanol CAS 2138198-53-3

Description

Compared with other compounds in its class, the molecular weight of 219.08 g/mol gives (4-Bromo-5-ethyl-1-methyl-1H-pyrazol-3-yl)methanol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(4-Bromo-5-ethyl-1-methyl-1H-pyrazol-3-yl)methanol (CAS 2138198-53-3) is a high-purity analytical reference standard with the molecular formula C7H11BrN2O and a molecular weight of 219.08 g/mol.

Structurally, (4-Bromo-5-ethyl-1-methyl-1H-pyrazol-3-yl)methanol (C7H11BrN2O) contains an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 219.08 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-Bromo-5-ethyl-1-methyl-1H-pyrazol-3-yl)methanol 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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