2,5-dibromo-3,4-di-tert-butylthiophene CAS 118888-11-2

Description

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.

2,5-dibromo-3,4-di-tert-butylthiophene (CAS 118888-11-2), molecular formula C12H18Br2S and molecular weight 354.14 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 2,5-dibromo-3,4-di-tert-butylthiophene (C12H18Br2S) contains sulfur-containing functionality, 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 354.14 g/mol, it falls into the moderately-high-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.

Physical & Chemical Properties

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