Pyrazine-2,6-dicarboxylic acid CAS 940-07-8
| CAS No. | 940-07-8 |
| Molecular Formula | C6H4N2O4 |
| Molecular Weight | 168.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 168.11 g/mol gives Pyrazine-2,6-dicarboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Pyrazine-2,6-dicarboxylic acid (CAS 940-07-8), a certified reference material (molecular formula C6H4N2O4, MW 168.11 g/mol) for analytical method development and quality control.
Pyrazine-2,6-dicarboxylic acid (C6H4N2O4) 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.
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 | C6H4N2O4 |
| Molecular Weight | 168.11 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.) | 1957 |
| Nitrogen Atoms | 2 |
Related Pyrazine Standards
- Pyrazine,2-methoxy-6-(1-methylpropyl)- (CAS 30712-68-6)
- Pyrazine-2,3-dicarboxamide (CAS 6164-78-9)
- Pyrazine-2,5-dicarboxamide (CAS 41110-27-4)
- 1,1'-(Pyrazine-2,6-diyl)diethanone (CAS 132855-06-2)
- 1,1'-(Pyrazine-2,5-diyl)bis(ethan-1-one) (CAS 39248-49-2)
- Pyrazine-2-sulfonyl fluoride (CAS 2090368-34-4)
- Pyrazine-2-sulfonic acid (CAS 139263-49-3)
- Pyrazine-2-sulfonamide (CAS 1195533-51-7)
Recommended Standards
- methyl 1,3,3-trifluorocyclobutanecarboxylate (CAS 2231677-18-0)
- Pyridazine-4,5-dicarboxylic Acid (CAS 59648-14-5)
- Methyl 1-(trifluoromethyl)cyclopropanecarboxylate (CAS 208242-25-5)
- Pyrimidine-4,5-dicarboxylic acid (CAS 54001-63-7)
- (S)-methyl 2-(2-hydroxy-1-(tetrahydro-2H-pyran-4-ylamino)ethyl)oxazole-4-carboxylate (CAS 1421050-89-6)
- (2s,3r)-2-(Trifluoromethyl)pyrrolidine-3-carboxylic acid (CAS 1486470-94-3)
- 1,3-Diphenyl-2,4,6(1H,3H,5H)-pyrimidinetrione (CAS 7391-60-8)
- (S)-2-(2-Methoxybenzyl)piperazine (CAS 612502-42-8)
- 5-Ethyl-1-methyl-2-phenyl-1H-pyrazol-3(2H)-one (CAS 109249-29-8)
- 2-Methoxy-3-methylpentanal (CAS 1864072-82-1)
- 2-(3-Methyl-1H-pyrazol-1-yl)-1H-benzo[d]imidazole (CAS 6488-90-0)
- Pitavastatin Impurity 39 (CAS 154170-27-1)
- 4-Amino-3,5-dichloro-N-cyclopropylbenzamide (CAS 60676-83-7)
- Neuropeptide SF (human) (CAS 192387-39-6)
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