6-Nitro-1H-benzo[d][1,3]oxazine-2,4-dione CAS 4693-02-1
| CAS No. | 4693-02-1 |
| Molecular Formula | C8H4N2O5 |
| Molecular Weight | 208.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Nitro-1H-benzo[d][1,3]oxazine-2,4-dione (CAS 4693-02-1), molecular formula C8H4N2O5 and molecular weight 208.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 6-Nitro-1H-benzo[d][1,3]oxazine-2,4-dione (C8H4N2O5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 208.13 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 6-Nitro-1H-benzo[d][1,3]oxazine-2,4-dione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H4N2O5 |
| Molecular Weight | 208.13 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related Nitro Standards
- 5-Nitro-1H-benzo[d][1,2,3]triazole-7-carboxylic acid (CAS 117886-75-6)
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- 5-Nitro-benzooxazole-2-carboxylic acid (CAS 49559-67-3)
- 6-nitro-1,3-benzoxazole-2-carboxylic acid (CAS 944907-31-7)
- 7-Nitro-1H-benzo[d][1,2,3]triazole-5-carboxylic acid (CAS 333767-00-3)
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Recommended Standards
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- 1-Cyclopropoxy-2-iodo-3-nitrobenzene (CAS 1243408-97-0)
- 3-(4-Chlorophenyl)-3-(4-ethoxyphenyl)propanoic acid (CAS 1225976-34-0)
- Ethyl 1,2,3,4-Tetrahydroisoquinoline-4-carboxylate (CAS 46389-19-9)
- 1-(3,4-dichlorophenyl)-6-hydroxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 340216-43-5)
- 4-(4-(Aminomethyl)phenyl)thiazole-2-carboxylic acid (CAS 886367-27-7)
- 2-Benzyl-7-chloro-1,2,3,4-tetrahydroisoquinoline (CAS 1194375-64-8)
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