Ethyl 5-bromo-3-methylthiophene-2-carboxylate CAS 909010-86-2
| CAS No. | 909010-86-2 |
| Molecular Formula | C8H9BrO2S |
| Molecular Weight | 249.12 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 Ethyl 5-bromo-3-methylthiophene-2-carboxylate (CAS 909010-86-2), a certified reference material (molecular formula C8H9BrO2S, MW 249.12 g/mol) for analytical method development and quality control.
The molecular framework of Ethyl 5-bromo-3-methylthiophene-2-carboxylate (C8H9BrO2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Ethyl 5-bromo-3-methylthiophene-2-carboxylate 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 | C8H9BrO2S |
| Molecular Weight | 249.12 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 | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
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Recommended Standards
- Ethyl 5-(bromomethyl)thiophene-3-carboxylate (CAS 206860-16-4)
- Methyl 4-bromo-2,5-dimethylthiophene-3-carboxylate (CAS 859489-84-2)
- ethyl 4-bromo-3-methyl-thiophene-2-carboxylate (CAS 265652-37-7)
- Methyl 4-bromo-3,5-dimethylthiophene-2-carboxylate (CAS 928044-46-6)
- (2,6-Dimethylpyridine-3,5-diyl)dimethanol (CAS 70993-72-5)
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