6-Bromo-2-methyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one CAS 1521402-63-0
| CAS No. | 1521402-63-0 |
| Molecular Formula | C8H7BrN2O2 |
| Molecular Weight | 243.06 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.
6-Bromo-2-methyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one (CAS 1521402-63-0) is a high-purity analytical reference standard with the molecular formula C8H7BrN2O2 and a molecular weight of 243.06 g/mol.
6-Bromo-2-methyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one (C8H7BrN2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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), 6-Bromo-2-methyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-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 | C8H7BrN2O2 |
| Molecular Weight | 243.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 5-Bromoisophthalamide (CAS 160892-06-8)
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- 5-Methoxy-1H-pyrrole-2-carbaldehyde (CAS 70118-98-8)
- 3-Bromo-2-(((4,6-dimethylpyrimidin-2-yl)thio)methyl)imidazo[1,2-a]pyridine (CAS 313403-98-4)
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