3-(Hydroxyimino)-3,4-dihydro-2h-1,4-benzoxazin-2-one CAS 903891-95-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 903891-95-2 |
| Molecular Formula | C8H6N2O3 |
| Molecular Weight | 178.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(Hydroxyimino)-3,4-dihydro-2h-1,4-benzoxazin-2-one (CAS 903891-95-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H6N2O3. Molecular weight: 178.14 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H6N2O3 |
| Molecular Weight | 178.14 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 3-(Furan-3-yl)-1H-pyrazole-5-carboxylic acid (CAS 2129110-26-3)
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- 3-(Furan-2-yl)-1H-pyrazole-5-carboxylic acid (CAS 890006-97-0)
- 2-(1H-1,2,3,4-Tetrazol-5-yl)acetonitrile (CAS 13616-36-9)
- N-(4-Methylbenzyl)-3-(4-oxo-3,4-dihydroquinazolin-2-yl)propanamide (CAS 743451-47-0)
- Metoprolol Impurity 52 (CAS CATO-C4X-136752)
- 2,6-Dichloro-N'-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]benzohydrazide (CAS 326807-66-3)
- Methyl 2-bromo-4-methylthiazole-5-carboxylate (CAS 81569-51-9)
- methyl thieno[2,3-b]pyridine-2-carboxylate (CAS 154650-88-1)
- Human glucagon CRS (CAS 9007-92-5)
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