5-bromo-3-methyl-thiophene-2-carboxylic acid CAS 38239-45-1
| CAS No. | 38239-45-1 |
| Molecular Formula | C6H9BrO2S |
| Molecular Weight | 225.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
CATO supplies 5-bromo-3-methyl-thiophene-2-carboxylic acid (CAS 38239-45-1), a certified reference material (molecular formula C6H9BrO2S, MW 225.10 g/mol) for analytical method development and quality control.
The molecular framework of 5-bromo-3-methyl-thiophene-2-carboxylic acid (C6H9BrO2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), 5-bromo-3-methyl-thiophene-2-carboxylic acid 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 Formula | C6H9BrO2S |
| Molecular Weight | 225.10 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
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- (2R,6S)-4-(tert-Butoxycarbonyl)-6-(hydroxymethyl)morpholine-2-carboxylic acid (CAS 1581750-77-7)
- 3-(5-Bromofuran-2-yl)-5-(4-ethoxy-3-methoxyphenyl)-1H-1,2,4-triazole (CAS 1416347-02-8)
- tert-butyl (2S)-2-(2-chloroacetamido)-2-phenylacetate (CAS 1909287-39-3)
- 2-(3,4-Difluorophenoxy)benzaldehyde (CAS 289717-89-1)
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- 2-(Azetidin-3-yl)-3-chloropyridine (CAS 1260868-52-7)
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