1,3-Dibromo-2,4-dichlorobenzene CAS 100191-19-3
| CAS No. | 100191-19-3 |
| Molecular Formula | C6H2Br2Cl2 |
| Molecular Weight | 304.79 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.
1,3-Dibromo-2,4-dichlorobenzene (CAS 100191-19-3), molecular formula C6H2Br2Cl2 and molecular weight 304.79 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to chlorine/bromine substitution, an aromatic ring system, 1,3-Dibromo-2,4-dichlorobenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 304.79 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.
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 | C6H2Br2Cl2 |
| Molecular Weight | 304.79 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl/Br-containing |
Related Dibromo Standards
- 1,4-Dibromo-2,3-dichlorobenzene (CAS 100191-20-6)
- 1,5-Dibromo-2,4-dichlorobenzene (CAS 100191-21-7)
- 1,2-Dibromo-3,6-dichlorobenzene (CAS 100191-22-8)
- 1,2-Dibromo-3,4-dichlorobenzene (CAS 100191-48-8)
- 2,5-Dibromo-1,3-dichlorobenzene (CAS 19393-97-6)
- 1,2-Dibromo-3,5-dichlorobenzene (CAS 81067-40-5)
- 1,2-Dibromo-4,5-dichlorobenzene (CAS 73557-66-1)
- 1,3-Dibromo-2,5-dichlorobenzene (CAS 81067-41-6)
Recommended Standards
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