4-Bromo-1,2-diiodobenzene CAS 21521-54-0
| CAS No. | 21521-54-0 |
| Molecular Formula | C6H3BrI2 |
| Molecular Weight | 408.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-Bromo-1,2-diiodobenzene (C6H3BrI2) contains bromine/iodine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 408.80 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.
4-Bromo-1,2-diiodobenzene (CAS 21521-54-0) is a high-purity analytical reference standard with the molecular formula C6H3BrI2 and a molecular weight of 408.80 g/mol.
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-1,2-diiodobenzene 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 | C6H3BrI2 |
| Molecular Weight | 408.80 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.) | 1963 |
| Halogen Content | Br/I-containing |
Related Bromo Standards
- 1-Bromo-2,4-diiodobenzene (CAS 126063-04-5)
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- 2,2'-(5-Bromo-1,3-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) (CAS 1150561-62-8)
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- Semaglutide impurity 51 (CAS CATO-C4X-222651)
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