3-hydroxy-2-quinoxalinecarboxylic acid CAS 1204-75-7
| CAS No. | 1204-75-7 |
| Molecular Formula | C9H16N2O3 |
| Molecular Weight | 200.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-hydroxy-2-quinoxalinecarboxylic acid (CAS 1204-75-7) is a high-purity analytical reference standard with the molecular formula C9H16N2O3 and a molecular weight of 200.23 g/mol.
3-hydroxy-2-quinoxalinecarboxylic acid (C9H16N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 3-hydroxy-2-quinoxalinecarboxylic acid 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 | C9H16N2O3 |
| Molecular Weight | 200.23 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
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- 9,10-Phenanthrenequinone (CAS 84-11-7)
- 1-(4-(Imidazo[1,2-a]pyridin-2-yl)phenyl)ethanone (CAS 55843-92-0)
- (1S,2S,4R)-tert-Butyl 4'-methyl-7-azaspiro[bicyclo[2.2.1]heptane-2,2'-morpholine]-7-carboxylate (CAS 1932093-31-6)
- (6-methylene-2,3,5,7-tetrahydro-1H-pyrrolizin-8-yl)methanol (CAS 942603-57-8)
- 2,2′-Bipyridine, 5-bromo-5′-methyl- (CAS 1187163-83-2)
- Bis(trifluoromethanesulfonyl)imide silver (CAS 189114-61-2)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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