Ethyl (2-nitrophenyl) oxalate CAS 17318-84-2
| CAS No. | 17318-84-2 |
| Molecular Formula | C10H9NO6 |
| Molecular Weight | 239.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl (2-nitrophenyl) oxalate 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.
Ethyl (2-nitrophenyl) oxalate (CAS 17318-84-2), molecular formula C10H9NO6 and molecular weight 239.18 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl (2-nitrophenyl) oxalate (C10H9NO6) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C10H9NO6 |
| Molecular Weight | 239.18 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.) | 1961 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
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- ((2-Nitrophenyl)carbamoyl)glycine (CAS 98378-89-3)
- 2-(2-Nitrophenyl)succinic acid (CAS 6332-94-1)
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Recommended Standards
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- N-(3,5-Difluorophenyl)-4-methylbenzamide (CAS 881763-65-1)
- 8-Bromo-1,2,3,3a,4,5-hexahydropyrrolo[1,2-a]quinoxaline (CAS 1472008-20-0)
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- Mesna (CAS 19767-45-4)
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- Semaglutide impurity 65 (CAS CATO-C4X-222665)
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