3-Bromo-2,6-difluoropyridine hydrate CAS 1881291-76-4
| CAS No. | 1881291-76-4 |
| Molecular Formula | C5H2BrF2N |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 211.99 g/mol gives 3-Bromo-2,6-difluoropyridine hydrate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Bromo-2,6-difluoropyridine hydrate (CAS 1881291-76-4), molecular formula C5H2BrF2NH2O and molecular weight 211.99 g/mol, is a CATO reference standard with documented purity and traceability.
3-Bromo-2,6-difluoropyridine hydrate (C5H2BrF2NH2O) contains an amide group, a hydroxyl group, an ether linkage, fluorine/bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 3-Bromo-2,6-difluoropyridine hydrate 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 H2O |
| Molecular Weight | 211.99 g/mol |
| Appearance | 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 5-bromo-2-fluoro-indan-1-one (CAS 1884326-91-3)
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- 3-(3-Hydroxypiperidin-1-yl)pyrazin-2(1H)-one (CAS 1594729-26-6)
- Tert-butyl (2-(4-hydroxy-3-(hydroxymethyl)phenyl)-2-oxoethyl)carbamate (CAS 1942890-99-4)
- 2-Fluoro-4-methoxy-1-phenylbenzene (CAS 634192-51-1)
- N-(5-cyanothiazol-2-yl)acetamide (CAS 99903-61-4)
- 5-Iodo-2-(3-methyl-4-nitrobenzamido)benzoic acid (CAS 294892-53-8)
- Semaglutide Impurity 149 (CAS CATO-C4X-2226149)
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