4-Bromo-2-methylthiophene CAS 29421-92-9

Purity 97%+In StockPharmaceutical Standards
CAS No.29421-92-9
Molecular FormulaC5H5BrS
Molecular Weight177.06 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Bromo-2-methylthiophene CAS 29421-92-9 chemical structure

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.

4-Bromo-2-methylthiophene (CAS 29421-92-9) is a high-purity analytical reference standard with the molecular formula C5H5BrS and a molecular weight of 177.06 g/mol.

Based on its molecular formula C5H5BrS, 4-Bromo-2-methylthiophene contains sulfur-containing functionality, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 177.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

As a certified reference material (CRM), 4-Bromo-2-methylthiophene 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

Molecular FormulaC5H5BrS
Molecular Weight177.06 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1965
Halogen ContentBr-containing
Sulfur Atoms1

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