5-bromo-4-methyl-1,3-oxazole hydrochloride CAS 1955498-47-1
| CAS No. | 1955498-47-1 |
| Molecular Formula | C4H4BrNO |
| Molecular Weight | N/A |
| 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.
5-bromo-4-methyl-1,3-oxazole hydrochloride (CAS 1955498-47-1), molecular formula C4H4BrNOHCl and molecular weight 198.44 g/mol, is a CATO reference standard with documented purity and traceability.
5-bromo-4-methyl-1,3-oxazole hydrochloride (C4H4BrNOHCl) contains an amide group, a hydroxyl group, an ether linkage, chlorine/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.
As a certified reference material (CRM), 5-bromo-4-methyl-1,3-oxazole hydrochloride 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 | C4H4BrNO HCl |
| Molecular Weight | 198.44 g/mol |
| 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
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- 4,4'-(1,10-Phenanthroline-3,8-diyl)dianiline (CAS 2387378-83-6)
- Phenacetin Impurity 5 (CAS 102236-24-8)
- (2,4-Dimethoxyphenyl)(phenyl)methanone (CAS 3555-84-8)
- Peptide Impurity 12 (CAS CATO-CPTD788812)
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