4,5-Dibromo-3-methylisothiazole CAS 1732-55-4

Description

The occurrence of 4,5-Dibromo-3-methylisothiazole is closely related to a nitrile group, sulfur-containing functionality, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4,5-Dibromo-3-methylisothiazole (CAS 1732-55-4) is a high-purity analytical reference standard with the molecular formula C4H3Br2NS and a molecular weight of 256.95 g/mol.

Based on its molecular formula C4H3Br2NS, 4,5-Dibromo-3-methylisothiazole contains a nitrile group, sulfur-containing functionality, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 256.95 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.

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), 4,5-Dibromo-3-methylisothiazole 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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