2,3-Pyrazinedicarboxylic acid, 1,6-dihydro-6-oxo- CAS 73403-48-2
| CAS No. | 73403-48-2 |
| Molecular Formula | C6H4N2O5 |
| Molecular Weight | 184.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,3-Pyrazinedicarboxylic acid, 1,6-dihydro-6-oxo- (CAS 73403-48-2), molecular formula C6H4N2O5 and molecular weight 184.11 g/mol, is a CATO reference standard with documented purity and traceability.
2,3-Pyrazinedicarboxylic acid, 1,6-dihydro-6-oxo- (C6H4N2O5) contains a carbohydrate-derived structure, an amide group. 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H4N2O5 |
| Molecular Weight | 184.11 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, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
Related Pyrazinedicarboxylic Standards
Recommended Standards
- 2,3-Dinitrophenol (CAS 66-56-8)
- 2,5-Dinitrophenol (Wetted with water >20%) (CAS 329-71-5)
- (s)-4-Hydroxy-4-(trifluoromethyl)tetrahydro-2h-pyran-2-one (CAS 956398-58-6)
- 3-(Trifluoromethoxy)tetrahydro-4H-pyran-4-one (CAS 2306277-15-4)
- 1-Ethoxy-2,4-dinitrobenzene (CAS 610-54-8)
- 2-(5-But-3-Yn-2-Yloxy-4-Chloro-2-Fluoro-Phenyl)-4,5,6,7-Tetrahydroisoindole-1,3-Dione (CAS 84478-52-4)
- 4-Bromo-5-isobutoxy-2-nitroaniline (CAS 1255574-43-6)
- 4-methoxy-N-methyl-pyridin-2-amine (CAS 1104455-24-4)
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- 3-amino-2-[(3-chloropyridin-4-yl)methyl]propan-1-ol dihydrochloride (CAS 1803591-49-2)
- 2-(4-Benzylmorpholin-3-yl)acetic acid (CAS 111949-91-8)
- Ethyl 4-(3-chloro-4-fluorophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 1449008-02-9)
- 4-(4-Methoxyphenyl)-4-oxobutanenitrile (CAS 55234-56-5)
- (Asn5)-Delta-Sleep Inducing Peptide (H-2555.0005) (CAS 80064-67-1)
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