3-Oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxamide CAS 263756-47-4
| CAS No. | 263756-47-4 |
| Molecular Formula | C9H9N3O2 |
| Molecular Weight | 191.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxamide is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxamide (CAS 263756-47-4) is a high-purity analytical reference standard with the molecular formula C9H9N3O2 and a molecular weight of 191.19 g/mol.
The molecular framework of 3-Oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxamide (C9H9N3O2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 3-Oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxamide 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 | C9H9N3O2 |
| Molecular Weight | 191.19 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 DMSO, DMF, methanol |
| 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.) | 2025 |
| Nitrogen Atoms | 3 |
Related Oxo Standards
- 1-Butyl-1,2,3,4-tetrahydroquinoxaline (CAS 105105-31-5)
- 2-Oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (CAS 189497-99-2)
- 3-Oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (CAS 702669-54-3)
- 3-Methyl-1,2,3,4-tetrahydroquinoxaline-5-carboxylic acid (CAS 946386-75-0)
- Methyl 1,2,3,4-tetrahydroquinoxaline-6-carboxylate (CAS 90918-37-9)
- 6-Acetyl-1,2,3,4-tetrahydroquinoxaline-2,3-dione (CAS 1018458-42-8)
- (R)-1,2,3,4-Tetrahydroquinoxaline-2-carboxylic acid (CAS 49849-50-5)
- 1,2,3,4-Tetrahydroquinoxaline-2-carboxylic acid (CAS 49849-51-6)
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- Ethyl 3-Chlorophenylacetate (CAS 14062-29-4)
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