5-Hydroxyquinoxalin-2(1H)-one CAS 659729-65-4
| CAS No. | 659729-65-4 |
| Molecular Formula | C8H6N2O2 |
| Molecular Weight | 162.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Hydroxyquinoxalin-2(1H)-one 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.
5-Hydroxyquinoxalin-2(1H)-one (CAS 659729-65-4), molecular formula C8H6N2O2 and molecular weight 162.15 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Hydroxyquinoxalin-2(1H)-one (C8H6N2O2) 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Hydroxyquinoxalin-2(1H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H6N2O2 |
| Molecular Weight | 162.15 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.) | 1985 |
| Nitrogen Atoms | 2 |
Related Hydroxyquinoxalin Standards
Recommended Standards
- 5-Hydroxyphthalazin-1(2H)-one (CAS 64223-57-0)
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- Nitrosamines Mix 13 (CAS CATO-MCHM703425-ME)
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- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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