| CAS No. | 71472-57-6 |
| Molecular Formula | C9H11NO |
| Molecular Weight | 149.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 149.19 g/mol gives 6-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 6-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 71472-57-6), a certified reference material (molecular formula C9H11NO, MW 149.19 g/mol) for analytical method development and quality control.
The molecular framework of 6-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine (C9H11NO) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C9H11NO |
| Molecular Weight | 149.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |