8-Nitro-2H-benzo[b][1,4]oxazin-3(4H)-one CAS 139605-33-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 139605-33-7 |
| Molecular Formula | C8H6N2O4 |
| Molecular Weight | 194.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
8-Nitro-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 139605-33-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H6N2O4. Molecular weight: 194.14 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H6N2O4 |
| Molecular Weight | 194.14 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.) | 1996 |
| Nitrogen Atoms | 2 |
Related Nitro Standards
- 5-Nitro-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 1002129-70-5)
- 7-Nitro-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 1042972-63-3)
- 5-Nitro-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 132522-81-7)
- 8-Nitro-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 148890-66-8)
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Recommended Standards
- 3,5-Diformyl-4-hydroxybenzoic acid (CAS 1384440-57-6)
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- methyl 2-oxo-2H,3H-[1,3]oxazolo[4,5-b]pyridine-6-carboxylate (CAS 1379222-01-1)
- 1-(4-Bromophenyl)imidazolidine-2,4-dione (CAS 32549-34-1)
- 2,4-Dinitrophenylhydrazine Hydrochloride (CAS 55907-61-4)
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- 1-(4-Iodophenyl)piperazine (CAS 96530-59-5)
- Copper Peptide ·2 acetate salt (CAS 130120-57-9)
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