5-Bromo-7-chloro-1,3-benzoxazol-2-amine CAS 1248045-93-3
| CAS No. | 1248045-93-3 |
| Molecular Formula | C7H4BrClN2O |
| Molecular Weight | 247.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 247.48 g/mol gives 5-Bromo-7-chloro-1,3-benzoxazol-2-amine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Bromo-7-chloro-1,3-benzoxazol-2-amine (CAS 1248045-93-3), molecular formula C7H4BrClN2O and molecular weight 247.48 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H4BrClN2O, 5-Bromo-7-chloro-1,3-benzoxazol-2-amine contains an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 247.48 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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-Bromo-7-chloro-1,3-benzoxazol-2-amine 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 | C7H4BrClN2O |
| Molecular Weight | 247.48 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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Recommended Standards
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- 5-Bromo-4-chloro-1H-benzo[d]imidazol-2(3H)-one (CAS 1388050-02-9)
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