Methyl 3-bromo-5-iodothiophene-2-carboxylate CAS 1355039-67-6
| CAS No. | 1355039-67-6 |
| Molecular Formula | C6H4BrIO2S |
| Molecular Weight | 346.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Methyl 3-bromo-5-iodothiophene-2-carboxylate (CAS 1355039-67-6) is a high-purity analytical reference standard with the molecular formula C6H4BrIO2S and a molecular weight of 346.97 g/mol.
Methyl 3-bromo-5-iodothiophene-2-carboxylate (C6H4BrIO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine/iodine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C6H4BrIO2S |
| Molecular Weight | 346.97 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| 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.) | 1991 |
| Halogen Content | Br/I-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
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Recommended Standards
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- Cyclohexane-1,1,2-triamine (CAS 91384-84-8)
- isoxazol-4-ol (CAS 80348-66-9)
- Ethyl 2-(4-chloro-3-fluorophenyl)-2-hydroxyacetate (CAS 1247619-04-0)
- 6-(Diethoxymethyl)-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 16953-49-4)
- (E)-N'-(6-{4-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl}-3,5-dicyanopyridin-2-yl)-N,N-dimethylmethanimidamide (CAS 338794-98-2)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
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