2-Bromo-3,4-difluoro-1-methylbenzene CAS 1807187-70-7
| CAS No. | 1807187-70-7 |
| Molecular Formula | C7H5BrF2 |
| Molecular Weight | 207.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 207.02 g/mol gives 2-Bromo-3,4-difluoro-1-methylbenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Bromo-3,4-difluoro-1-methylbenzene (CAS 1807187-70-7) is a high-purity analytical reference standard with the molecular formula C7H5BrF2 and a molecular weight of 207.02 g/mol.
2-Bromo-3,4-difluoro-1-methylbenzene (C7H5BrF2) contains fluorine/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 | C7H5BrF2 |
| Molecular Weight | 207.02 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.) | 1995 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
- 3-Bromo-4,5-difluorotoluene (CAS 1143502-74-2)
- 5-Bromo-1,2-difluoro-3-methylbenzene (CAS 1143502-75-3)
- 2-Bromo-3,6-difluorotoluene (CAS 1208074-75-2)
- 1-Bromo-2,5-difluoro-3-methylbenzene (CAS 1416354-32-9)
- 5-Bromo-2,4-difluorotoluene (CAS 159277-47-1)
- 1-Bromo-3-fluoro-5-(fluoromethyl)benzene (CAS 1715032-20-4)
- 1-Bromo-3-fluoro-2-(fluoromethyl)benzene (CAS 1782526-83-3)
- 2-Bromo-1-fluoro-4-(fluoromethyl)benzene (CAS 1783551-07-4)
Recommended Standards
- 2-Bromo-1,3-difluoro-5-methylbenzene (CAS 1805120-10-8)
- 2-Bromo-4-fluoro-1-(fluoromethyl)benzene (CAS 1823057-15-3)
- 4-Bromo-2,6-difluorotoluene (CAS 179617-08-4)
- (2-(Thiazol-2-yl)pyrimidin-5-yl)boronic acid (CAS 2225155-13-3)
- 5-Bromo-1H-indazole-3-carbonitrile, 97% (CAS 201227-39-6)
- 2-Cyano-N'-(propan-2-ylidene)acetohydrazide (CAS 4974-42-9)
- 2-(3-Oxo-3,4-dihydro-2H-benzo[b][1,4]thiazin-2-yl)-N-(p-tolyl)acetamide (CAS 106691-37-6)
- Methyl 3-formyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (CAS 1256806-17-3)
- ((2,2-Diethoxyethoxy)methyl)benzene (CAS 42783-78-8)
- 2-(Ethoxymethyl)-4-methyl-1,3-thiazole-5-carboxylic acid (CAS 136204-53-0)
- (2Z)-2-(Nitromethylidene)-3-[4-(trifluoromethoxy)phenyl]-1,3-thiazolidin-4-one (CAS 1164500-27-9)
- 2-(Aminomethyl)benzamide (CAS 63056-17-7)
- 5-(Pyridin-3-yl)-1H-pyrrolo[2,3-c]pyridine (CAS 623175-26-8)
- Semaglutide impurity 268 (CAS CATO-C4X-2226268)
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