1,2-Dibromo-3,4-dimethylbenzene CAS 24932-49-8
| CAS No. | 24932-49-8 |
| Molecular Formula | C8H8Br2 |
| Molecular Weight | 263.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 263.96 g/mol gives 1,2-Dibromo-3,4-dimethylbenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2-Dibromo-3,4-dimethylbenzene (CAS 24932-49-8) is a high-purity analytical reference standard with the molecular formula C8H8Br2 and a molecular weight of 263.96 g/mol.
1,2-Dibromo-3,4-dimethylbenzene (C8H8Br2) contains bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H8Br2 |
| Molecular Weight | 263.96 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.) | 1964 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 2,5-Dibromo-m-xylene (CAS 100189-84-2)
- 4,5-Dibromo-m-xylene (CAS 116668-61-2)
- 1,2-Dibromo-4-ethylbenzene (CAS 134940-69-5)
- 1,3-Dibromo-2,4-dimethylbenzene (CAS 90434-19-8)
- 1,3-Dibromo-2,5-dimethylbenzene (CAS 66788-13-4)
- 1,3-DIBROMO-2-ETHYLBENZENE (CAS 41053-30-9)
- 1,4-Dibromo-2-ethylbenzene (CAS 289039-53-8)
- 1,5-Dibromo-2,3-dimethylbenzene (CAS 51209-82-6)
Recommended Standards
- 1-Bromo-4-(2-bromoethyl)benzene (CAS 1746-28-7)
- (-)-1-Bromo-4-(1-bromoethyl)benzene (CAS 159755-11-0)
- 4-Bromo-2-methylbenzyl Bromide (CAS 156001-49-9)
- (4-(Methoxycarbonyl)-3-(trifluoromethoxy)phenyl)boronic acid (CAS 1242145-45-4)
- 2-(Chloromethyl)-1-fluoro-4-(trifluoromethoxy)benzene (CAS 1517586-69-4)
- (R)-1-(3-Chlorophenyl)-2-methylpropan-1-amine hydrochloride (CAS 1391479-99-4)
- Fenfuram Impurity 12 (CAS 445000-23-7)
- Cyclopropyl-[1-(2-hydroxy-ethyl)-piperidin-3-yl]-carbamic acid tert-butyl ester (CAS 1354000-99-9)
- 2-Amino-6-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-4h,5h,6h,7h-thieno[2,3-c]pyridine-3-carbonitrile (CAS 321430-41-5)
- (3'-Nitro-[1,1'-biphenyl]-4-yl)methanol (CAS 880158-11-2)
- N-(3-Methylisothiazol-5-yl)-4-propyl-1,2,3-thiadiazole-5-carboxamide (CAS 1207024-49-4)
- 2-(4-(3-Bromophenyl)tetrahydro-2H-pyran-4-yl)acetic acid (CAS 1226383-77-2)
- Methyl (2-(4-ethoxyphenyl)acetyl)glycinate (CAS 940792-50-7)
- Mitogenic Pentapeptide (CAS 87173-03-3)
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