4-Bromo-2,3-difluoro-benzoic Acid CAS 194804-91-6
| CAS No. | 194804-91-6 |
| Molecular Formula | C7H3BrF2O2 |
| Molecular Weight | 237.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-2,3-difluoro-benzoic Acid.
4-Bromo-2,3-difluoro-benzoic Acid (CAS 194804-91-6), molecular formula C7H3BrF2O2 and molecular weight 237.00 g/mol, is a CATO reference standard with documented purity and traceability.
4-Bromo-2,3-difluoro-benzoic Acid (C7H3BrF2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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-2,3-difluoro-benzoic Acid 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 | C7H3BrF2O2 |
| Molecular Weight | 237.00 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2012 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
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- 1-(4-Ethoxyphenyl)-5-phenyl-1h-imidazole-2-thiol (CAS 793678-92-9)
- 3-(4-Iodo-3-methyl-1h-pyrazol-1-yl)propanoic acid (CAS 1005583-96-9)
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