1,2,5-Tribromo-4-chloro-3-methylbenzene CAS 2379321-91-0
| CAS No. | 2379321-91-0 |
| Molecular Formula | C7H4Br3Cl |
| Molecular Weight | 363.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,2,5-Tribromo-4-chloro-3-methylbenzene (CAS 2379321-91-0), molecular formula C7H4Br3Cl and molecular weight 363.27 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1,2,5-Tribromo-4-chloro-3-methylbenzene (C7H4Br3Cl) is characterized by chlorine/bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 1,2,5-Tribromo-4-chloro-3-methylbenzene 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 | C7H4Br3Cl |
| Molecular Weight | 363.27 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.) | 1999 |
| Halogen Content | Cl/Br-containing |
Related Tribromo Standards
- 1,3,5-Tribromo-2-(difluoromethyl)benzene (CAS 1261684-53-0)
- 2,3,4-Tribromo(difluoromethyl)benzene (CAS 1261828-79-8)
- 2,4,6-Tribromo-3-(hydroxymethyl)phenol (CAS 2316-63-4)
- 2,4,6-Tribromo-3-methoxyphenol (CAS 24967-79-1)
- 2,4,6-Tribromo-5-methylbenzene-1,3-diol (CAS 3163-24-4)
- 3,4,6-Tribromo-5-methylbenzene-1,2-diol (CAS 56759-56-9)
- 1,3,5-Tribromo-1,3,5-triazinane-2,4,6-trione (CAS 17497-85-7)
- 2,3,5-Tribromo-4-(difluoromethyl)pyridine (CAS 1361880-23-0)
Recommended Standards
- 1-((5-Bromo-2-methoxyphenyl)sulfonyl)-4-ethylpiperazine (CAS 873679-92-6)
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