5-bromo-4-fluoro-3H-1,3-benzoxazol-2-one CAS 2059951-19-6
| CAS No. | 2059951-19-6 |
| Molecular Formula | C7H9BrFNO2 |
| Molecular Weight | 238.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-bromo-4-fluoro-3H-1,3-benzoxazol-2-one (C7H9BrFNO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 238.05 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 5-bromo-4-fluoro-3H-1,3-benzoxazol-2-one (CAS 2059951-19-6), a certified reference material (molecular formula C7H9BrFNO2, MW 238.05 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-bromo-4-fluoro-3H-1,3-benzoxazol-2-one 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 | C7H9BrFNO2 |
| Molecular Weight | 238.05 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
Related bromo Standards
- 6-bromo-4-fluoro-3H-1,3-benzoxazol-2-one (CAS 1780002-65-4)
- 6-bromo-7-fluoro-3H-1,3-benzoxazol-2-one (CAS 1936453-64-3)
- 4-bromo-5-fluoro-3H-1,3-benzoxazol-2-one (CAS 2156619-43-9)
- 4-bromo-6-fluoro-3H-1,3-benzoxazol-2-one (CAS 2387595-42-6)
- 4-bromo-7-fluoro-3H-1,3-benzoxazol-2-one (CAS 2387598-72-1)
- 5-bromo-6-fluoro-3H-1,3-benzoxazol-2-one (CAS 32273-01-1)
- 5-bromo-7-fluoro-3H-1,3-benzoxazol-2-one (CAS 509147-84-6)
- 7-bromo-4-fluoro-3H-1,3-benzoxazol-2-one (CAS 2387598-51-6)
Recommended Standards
- 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine-2,4(1H,3H)-dione (CAS 2223030-53-1)
- 5-Iodothiophene-2-carbaldehyde (CAS 5370-19-4)
- 6-(Boc-amino)pyridine-3-boronic Acid (CAS 883231-20-7)
- 4-(Boc-amino)pyridine-3-boronic Acid (CAS 863752-59-4)
- 5-[3-(4-Methoxy-3-methyl-phenyl)-propyl]-[1,3,4]oxadiazole-2-thiol (CAS 433247-73-5)
- N-Dodecanoyl-Prolinemonosodiumsalt (CAS 70609-63-1)
- Benzo[d]oxazole-2-sulfonyl chloride (CAS 1026975-53-0)
- 3-Amino-2-(4-(trifluoromethoxy)benzyl)propanoic acid (CAS 910443-94-6)
- Tert-butyl (2-chloro-3-methylpyridin-4-yl)carbamate (CAS 370864-66-7)
- Diphenyl Phosphate-d10 (CAS 1477494-97-5)
- ethyl 2-(7-{[(tert-butoxy)carbonyl]amino}-4,5,6,7-tetrahydro-2H-indazol-2-yl)acetate (CAS 1797646-46-8)
- 1-aryl-sn-glycero-3-phosphocholine (CAS 108341-80-6)
- [1-Phenyl-2-(1H-pyrazol-1-yl)ethyl]amine dihydrochloride (CAS 1158481-95-8)
- (D-Ala2)-Gastric Inhibitory Polypeptide (human) trifluoroacetate salt (CAS 444073-04-5)
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