7-nitro-3,4-dihydro-2H-1,4-benzoxazepin-5-one CAS 21228-43-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21228-43-3 |
| Molecular Formula | C9H14N2O4 |
| Molecular Weight | 214.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 7-nitro-3,4-dihydro-2H-1,4-benzoxazepin-5-one (CAS 21228-43-3) pharmaceutical standards reference standard. Molecular formula: C9H14N2O4. Molecular weight: 214.22 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C9H14N2O4 |
| Molecular Weight | 214.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
Related nitro Standards
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- 2-Methyl-3-nitro-5-phenylpyridine (CAS 1214369-90-0)
- 2'-Nitro-[1,1'-biphenyl]-2-amine (CAS 35883-86-4)
- 3-Nitro-n-phenylaniline (CAS 4531-79-7)
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- 4-Nitro-1,2-dihydroacenaphthylen-5-amine (CAS 4657-95-8)
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Recommended Standards
- 7-Ethoxy-4-hydroxyquinoline-3-carbonitrile (CAS 214476-07-0)
- 9-Oxo-4,5,6,7,8,9-hexahydropyrazolo[5,1-b]quinazoline-3-carbonitrile (CAS 799250-64-9)
- 7-(Aziridin-1-yl)-6-methylquinoline-5,8-dione (CAS 64636-54-0)
- 2-Methyl-1-(3-nitropyridin-2-yl)piperazine (CAS 622405-24-7)
- 5-Amino-3-methylpicolinamide (CAS 2572582-37-5)
- 3-Ethoxy-1-phenyl-6,7-dihydroisobenzofuran-4(5H)-one (CAS 920977-82-8)
- Ethyl 6-(chloromethyl)-4-(2,3-dimethoxyphenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 380589-29-7)
- Norgestrienone (CAS 848-21-5)
- Tert-butyl 3-(trifluoromethoxy)piperidine-1-carboxylate (CAS 1206524-11-9)
- Semaglutide impurity 41 (CAS CATO-C4X-222641)
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