| CAS No. | 1305325-17-0 |
| Molecular Formula | C7H4Br2N2O2 |
| Molecular Weight | 307.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
6,8-Dibromo-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one (CAS 1305325-17-0) is a high-purity analytical reference standard with the molecular formula C7H4Br2N2O2 and a molecular weight of 307.93 g/mol.
Based on its molecular formula C7H4Br2N2O2, 6,8-Dibromo-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 307.93 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C7H4Br2N2O2 |
| Molecular Weight | 307.93 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 sealed and dry |
| 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.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |