4-Bromo-2,5-difluoropyridine CAS 1349718-16-6
| CAS No. | 1349718-16-6 |
| Molecular Formula | C5H2BrF2N |
| Molecular Weight | 193.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 193.98 g/mol gives 4-Bromo-2,5-difluoropyridine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Bromo-2,5-difluoropyridine (CAS 1349718-16-6), a certified reference material (molecular formula C5H2BrF2N, MW 193.98 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H2BrF2N, 4-Bromo-2,5-difluoropyridine contains a nitrile group, fluorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 193.98 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), 4-Bromo-2,5-difluoropyridine 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 | C5H2BrF2N |
| Molecular Weight | 193.98 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 3-Bromo-4,5-dihydroisoxazole-5-carboxylic acid (CAS 1130365-33-1)
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- 3-Bromo-2,4-difluoropyridine (CAS 1227502-60-4)
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- 2-Bromo-3,5-difluoropyridine (CAS 660425-16-1)
Recommended Standards
- 3,4-Dichloro-5-nitropyridazine (CAS 1706465-11-3)
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- 2,3-DIBROMO-6-PICOLINE (CAS 261373-04-0)
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- Tert-butyl (4-(4-aminophenyl)tetrahydro-2h-pyran-4-yl)carbamate (CAS 1334488-37-7)
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- O-2050 (CAS 851320-29-1)
- Semaglutide impurity 46 (CAS CATO-C4X-222646)
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