6-Methyl-2-(p-tolylamino)-4a,8a-dihydro-4H-benzo[d][1,3]oxazin-4-one CAS 1998216-37-7
| CAS No. | 1998216-37-7 |
| Molecular Formula | C16H16N2O2 |
| Molecular Weight | 268.31 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.
6-Methyl-2-(p-tolylamino)-4a,8a-dihydro-4H-benzo[d][1,3]oxazin-4-one (CAS 1998216-37-7), molecular formula C16H16N2O2 and molecular weight 268.31 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H16N2O2, 6-Methyl-2-(p-tolylamino)-4a,8a-dihydro-4H-benzo[d][1,3]oxazin-4-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 268.31 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).
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 | C16H16N2O2 |
| Molecular Weight | 268.31 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 2 |
Recommended Standards
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- 5-(1-Aminopentyl)benzene-1,3-diol (CAS 1270444-99-9)
- Tirzepatide Impurity 9 (CAS CATO-C4X-32409)
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