6-Methyl-2-(4-methylphenyl)-4H-3,1-benzoxazin-4-one CAS 40728-70-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 40728-70-9 |
| Molecular Formula | C16H13NO2 |
| Molecular Weight | 251.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Methyl-2-(4-methylphenyl)-4H-3,1-benzoxazin-4-one (CAS 40728-70-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H13NO2. Molecular weight: 251.28 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C16H13NO2 |
| Molecular Weight | 251.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 6-Methoxy-3-phenylquinolin-4(1H)-one (CAS 327592-86-9)
- 7-(4-Nitrophenyl)heptanoic acid (CAS 66147-99-7)
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- cis-5-Fluoro-1-[2-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-1,3-oxathiolan-5-yl]-2,4(1H,3H)-pyrimidinedione 13C,15N2 (CAS 1217650-77-5)
- cis-propenylphosphonic acid (CAS 25383-06-6)
- 1-Bromo-4-((1R,2R)-2-(trifluoromethyl)cyclopropyl)benzene (CAS 1820581-63-2)
- 6-Methyl-2-((2-(piperidin-1-yl)ethyl)thio)-4-(trifluoromethyl)nicotinonitrile (CAS 317844-64-7)
- 4-Chloro-7-(3-(trifluoromethyl)pyridin-2-yl)quinazoline (CAS 573675-83-9)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
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