2-Bromo-1,3-dichloro-4-methylbenzene CAS 206559-41-3
| CAS No. | 206559-41-3 |
| Molecular Formula | C7H5BrCl2 |
| Molecular Weight | 239.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Bromo-1,3-dichloro-4-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.
2-Bromo-1,3-dichloro-4-methylbenzene (CAS 206559-41-3) is a high-purity analytical reference standard with the molecular formula C7H5BrCl2 and a molecular weight of 239.92 g/mol.
Based on its molecular formula C7H5BrCl2, 2-Bromo-1,3-dichloro-4-methylbenzene contains chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 239.92 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C7H5BrCl2 |
| Molecular Weight | 239.92 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| 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.) | 2016 |
| Halogen Content | Cl/Br-containing |
Related Bromo Standards
- 1-Bromo-2,5-dichloro-3-methylbenzene (CAS 1000571-63-0)
- 1-Bromo-3-chloro-5-(chloromethyl)benzene (CAS 1060812-67-0)
- 1-Bromo-3,5-dichloro-2-methylbenzene (CAS 115615-19-5)
- 1-Bromo-3-chloro-2-(chloromethyl)benzene (CAS 1242284-61-2)
- 1-Bromo-4-chloro-2-(chloromethyl)benzene (CAS 1261678-76-5)
- 1-Bromo-2-chloro-3-(chloromethyl)benzene (CAS 1261790-43-5)
- 1-Bromo-2,4-dichloro-3-methylbenzene (CAS 127049-87-0)
- 6-Bromo-2,3-dichlorotoluene (CAS 1805023-65-7)
Recommended Standards
- 2,3-Dichlorobenzyl Bromide (CAS 57915-78-3)
- 2-Bromo-1,5-dichloro-3-methylbenzene (CAS 876493-68-4)
- 2-(Bromomethyl)-1,4-dichlorobenzene (CAS 85482-13-9)
- 2-Bromo-1-chloro-4-(chloromethyl)benzene (CAS 880348-46-9)
- N-(4-(cyanomethyl)-2-nitrophenyl)acetamide (CAS 123270-23-5)
- N-(1-cyanocyclopentyl)acetamide (CAS 5009-09-6)
- (R)-2-(2,5-dibromophenyl)pyrrolidine (CAS 1228556-97-5)
- Methyl 6-(benzyl(methyl)amino)-5-methylnicotinate (CAS 1355224-48-4)
- 2-(2,4-Dimethylcyclohex-3-Ene-1-Yl)-5-Methyl-5-(1-Methylpropyl)-1,3-Dioxane (CAS 117933-89-8)
- 1,7,7-Trimethyl-N-propylbicyclo[2.2.1]Heptan-2-amine (CAS 92030-52-9)
- Ruxolitinib-d9 (CAS 1513883-55-0)
- 3-(2-(Ethylthio)pyrimidin-4-yl)-1-(p-tolyl)pyridazin-4(1H)-one (CAS 478077-69-9)
- 2-Nitro-5-(prop-1-en-2-yl)pyridine (CAS 1135437-90-9)
- Semaglutide impurity 61 (CAS CATO-C4X-222661)
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