3-Bromo-2,4-diiodo-5-methylthiophene CAS 1221791-68-9
| CAS No. | 1221791-68-9 |
| Molecular Formula | C5H3BrI2S |
| Molecular Weight | 428.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-Bromo-2,4-diiodo-5-methylthiophene (C5H3BrI2S) contains sulfur-containing functionality, bromine/iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 428.86 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 3-Bromo-2,4-diiodo-5-methylthiophene (CAS 1221791-68-9), a certified reference material (molecular formula C5H3BrI2S, MW 428.86 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C5H3BrI2S |
| Molecular Weight | 428.86 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br/I-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
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Recommended Standards
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