1253791-15-9 3185AD 7-Phenyl-1H-pyrimido[4,5-d][1,3]oxazine-2,4-dione C12H7N3O3 CAS 1253791-15-9
| CAS No. | 1253791-15-9 |
| Molecular Formula | C12H7N3O3 |
| Molecular Weight | 241.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1253791-15-9 3185AD 7-Phenyl-1H-pyrimido[4,5-d][1,3]oxazine-2,4-dione C12H7N3O3 (CAS 1253791-15-9), molecular formula C12H7N3O3 and molecular weight 241.20 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1253791-15-9 3185AD 7-Phenyl-1H-pyrimido[4,5-d][1,3]oxazine-2,4-dione C12H7N3O3 (C12H7N3O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 241.20 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H7N3O3 |
| Molecular Weight | 241.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
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