2,5-dibromo-3-nitro-Thiophene CAS 2160-51-2
| CAS No. | 2160-51-2 |
| Molecular Formula | C4HBr2NO2S |
| Molecular Weight | 286.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 286.93 g/mol gives 2,5-dibromo-3-nitro-Thiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,5-dibromo-3-nitro-Thiophene (CAS 2160-51-2), molecular formula C4HBr2NO2S and molecular weight 286.93 g/mol, is a CATO reference standard with documented purity and traceability.
2,5-dibromo-3-nitro-Thiophene (C4HBr2NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. 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.
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 | C4HBr2NO2S |
| Molecular Weight | 286.93 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related dibromo Standards
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Recommended Standards
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- Methyl 2-chloro-4,6-difluorobenzoate (CAS 1261869-14-0)
- 2-Bromo-6-iodo-3-pyridinol (CAS 129611-32-1)
- 2-Bromo-5-iodo-4-methylaniline (CAS 876494-97-2)
- 2-Chloro-1-nitro-3-(trichloromethoxy)benzene (CAS 1417568-03-6)
- 24-Nor Ursodeoxycholic Acid Methyl Ester (CAS 118316-16-8)
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