5-(4-Bromo-2,3-difluorophenyl)oxazole CAS 2379321-77-2
| CAS No. | 2379321-77-2 |
| Molecular Formula | C9H4BrF2NO |
| Molecular Weight | 260.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 260.03 g/mol gives 5-(4-Bromo-2,3-difluorophenyl)oxazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(4-Bromo-2,3-difluorophenyl)oxazole (CAS 2379321-77-2), molecular formula C9H4BrF2NO and molecular weight 260.03 g/mol, is a CATO reference standard with documented purity and traceability.
5-(4-Bromo-2,3-difluorophenyl)oxazole (C9H4BrF2NO) contains a nitrogen-containing heterocyclic scaffold, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 5-(4-Bromo-2,3-difluorophenyl)oxazole 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 | C9H4BrF2NO |
| Molecular Weight | 260.03 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 5-(4-Bromo-2,6-difluorophenyl)oxazole (CAS 1400706-90-2)
- 5-Bromo-4,6-difluoro-1H-indole-3-carbaldehyde (CAS 1467059-98-8)
- 4-Bromo-2,3,5,6-tetrafluorobenzonitrile (CAS 17823-40-4)
- 2-Bromo-4-(trifluoromethyl)thiazole-5-carbaldehyde (CAS 1823346-47-9)
- 4-Bromo-2-(trifluoromethyl)thiazole-5-carbaldehyde (CAS 1956379-59-1)
- 4-Bromo-6,7-difluoroisoquinolin-1(2H)-one (CAS 2445603-52-9)
- 5-(2-Bromo-3,6-difluorophenyl)oxazole (CAS 2364585-03-3)
- 5-(2-Bromo-4,6-difluorophenyl)oxazole (CAS 2364584-90-5)
Recommended Standards
- 5-(4-Bromo-2,5-difluorophenyl)oxazole (CAS 2364584-75-6)
- 5-(6-Bromo-2,3-difluorophenyl)oxazole (CAS 2364585-22-6)
- 4-Iodo-1H-indazol-6-ol (CAS 887570-29-8)
- 5-HYDROXY-3-IODOINDAZOLE (CAS 885519-38-0)
- (4R,4S)-Benzyl-4-deoxy-4-C-nitromethyl-β-D-arabinopyranoside (CAS 383173-66-8)
- 2-(Bromomethyl)-6-fluorospiro[3.3]heptane (CAS 2715119-84-7)
- 1-(3,4-dimethylphenyl)-1H-imidazole-2-thiol (CAS 851207-77-7)
- 2-(3,5-Dimethyl-1H-pyrazol-1-yl)propan-1-ol (CAS 1177336-15-0)
- 4-(Trifluoromethyl)pyridine 4-trifluoromethylpyridine 4-trifluoromethyl-pyridine 3796-24-5 (CAS 3796-24-5)
- Semaglutide impurity 29 (CAS CATO-C4X-222629)
- Pentan-2-yltriphenylphosphonium bromide (CAS 17827-53-1)
- 5-Chloro-6-(chloromethyl)-1,3-dioxaindane (CAS 23468-31-7)
- 8-Methyl-4-oxa-1-azaspiro[5.5]undecane (CAS 1250512-83-4)
- D-Pro37-Tirzepatide (CAS CATO-CPTD788902)
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