7-bromo-5-fluoro-3H-1,3-benzoxazol-2-one CAS 32272-96-1
| CAS No. | 32272-96-1 |
| Molecular Formula | C7H9BrFNO2 |
| Molecular Weight | 238.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
7-bromo-5-fluoro-3H-1,3-benzoxazol-2-one (CAS 32272-96-1), molecular formula C7H9BrFNO2 and molecular weight 238.05 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 7-bromo-5-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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures 7-bromo-5-fluoro-3H-1,3-benzoxazol-2-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
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.) | 1966 |
| 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-4-fluoro-3H-1,3-benzoxazol-2-one (CAS 2059951-19-6)
- 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)
Recommended Standards
- 7-bromo-4-fluoro-3H-1,3-benzoxazol-2-one (CAS 2387598-51-6)
- 7-bromo-6-fluoro-3H-1,3-benzoxazol-2-one (CAS 243448-05-7)
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