2-Bromo-1-chloro-4-(difluoromethyl)benzene CAS 39982-22-4
| CAS No. | 39982-22-4 |
| Molecular Formula | C7H4BrClF2 |
| Molecular Weight | 241.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 241.46 g/mol gives 2-Bromo-1-chloro-4-(difluoromethyl)benzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Bromo-1-chloro-4-(difluoromethyl)benzene (CAS 39982-22-4), molecular formula C7H4BrClF2 and molecular weight 241.46 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to fluorine/chlorine/bromine substitution, an aromatic ring system, 2-Bromo-1-chloro-4-(difluoromethyl)benzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 241.46 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C7H4BrClF2 |
| Molecular Weight | 241.46 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.) | 1968 |
| Halogen Content | F/Cl/Br-containing |
Related Bromo Standards
- 1-Bromo-3-(chloromethyl)-2,5-difluorobenzene (CAS 1159186-57-8)
- 3-Bromo-2-chloro-4,5-difluorotoluene (CAS 1208077-47-7)
- 1-Bromo-3-chloro-2-(difluoromethyl)benzene (CAS 1214348-94-3)
- 4-Bromo-2-chloro-1-(difluoromethyl)benzene (CAS 1254034-23-5)
- 5-Bromo-2,4-difluorobenzyl chloride (CAS 1260810-32-9)
- 2-Bromo-4-chloro-1-(difluoromethyl)benzene (CAS 1261476-50-9)
- 2-Bromo-1-chloro-4-(difluoromethyl)benzene (CAS 1261495-96-8)
- 1-Bromo-3-chloro-5-(difluoromethyl)benzene (CAS 1261580-23-7)
Recommended Standards
- 2,6-Dichloro-3-chloromethyl-5-nitropyridine, 97% (CAS 51071-61-5)
- 2-Bromo-1-chloro-4-fluoro-3-(fluoromethyl)benzene (CAS 2244087-33-8)
- 2,4,6-Trichloro-5-pyrimidineacetic acid (CAS 20401-33-6)
- 2-Hexyldecan-1-amine (CAS 62281-05-4)
- 2-(Benzyloxy)-5-bromo-1,3-dichlorobenzene (CAS 155891-94-4)
- 2-Bromo-N-(3-isopropoxyphenyl)acetamide (CAS 918408-65-8)
- Methyl 2-amino-3-(2,5-dioxopyrrolidin-1-yl)-2-methylpropanoate (CAS 1250638-66-4)
- 2-(Aminomethyl)-3-chloro-5-(difluoromethyl)-4-nitropyridine (CAS 1804378-99-1)
- 8-Benzyl 3-ethyl 2,8-diazaspiro[4.5]decane-3,8-dicarboxylate (CAS 2306261-41-4)
- 3-Chloro-1-thioisoquinoline (CAS 1706444-53-2)
- Ritonavir Impurity 60 (CAS 2454100-44-6)
- Ald-Ph-amido-PEG4-propargyl (CAS 1969299-27-1)
- (R)-2-(Tetrahydrofuran-3-yl)-1,3,6,2-dioxazaborocane (CAS 100858-40-0)
- Semaglutide Impurity 191 (CAS CATO-C4X-2226191)
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