4-bromo-2-methoxythiophene CAS 73882-42-5
| CAS No. | 73882-42-5 |
| Molecular Formula | C5H9BrOS |
| Molecular Weight | 197.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 197.09 g/mol gives 4-bromo-2-methoxythiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-bromo-2-methoxythiophene (CAS 73882-42-5), molecular formula C5H9BrOS and molecular weight 197.09 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, 4-bromo-2-methoxythiophene is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 197.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-bromo-2-methoxythiophene 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 | C5H9BrOS |
| Molecular Weight | 197.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related bromo Standards
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- 3-Bromo-1-propanethiol Acetate (CAS 928-46-1)
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- 37653-33-1 5-Bromo-N-methyl-1,3-thiazol-2-amine MFCD14702791 (CAS 37653-33-1)
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Recommended Standards
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- WAY-640879 (CAS 851212-80-1)
- 3-(4-(Thiomorpholinomethyl)benzoyl)benzonitrile (CAS 898782-43-9)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788677)
Why CATO?
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