3-Hydroxypyrazine-2-carboxylic Acid CAS 20737-42-2
| CAS No. | 20737-42-2 |
| Molecular Formula | C5H4N2O3 |
| Molecular Weight | 140.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Hydroxypyrazine-2-carboxylic 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.
3-Hydroxypyrazine-2-carboxylic Acid (CAS 20737-42-2) is a high-purity analytical reference standard with the molecular formula C5H4N2O3 and a molecular weight of 140.10 g/mol.
Based on its molecular formula C5H4N2O3, 3-Hydroxypyrazine-2-carboxylic Acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 140.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C5H4N2O3 |
| Molecular Weight | 140.10 g/mol |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 2 |
Related Hydroxypyrazine Standards
- 5-Hydroxypyrazine-2-carboxylic acid (CAS 34604-60-9)
- N-Hydroxypyrazine-2-carboxamide (CAS 768-06-9)
- 6-hydroxypyrazine-2-carboxylic acid (CAS 13924-99-7)
- 5-hydroxypyrazine-2-carbaldehyde (CAS 1822931-46-3)
- 5-Hydroxypyrazine-2-carboxylic Acid Methyl Ester (CAS 13924-95-3)
- 5-Hydroxypyrazine-2-carbonyl chloride (CAS 1261490-22-5)
- 3-Hydroxypyrazine-2-carbonyl chloride (CAS 98136-34-6)
- 5-Hydroxypyrazine-2-carbonitrile (CAS 134510-05-7)
Recommended Standards
- 2-Oxo-1H-imidazole-1,3(2H)-dicarbaldehyde (CAS 745012-40-2)
- 3-Nitropyrazin-2-amine (CAS 754196-97-9)
- 2-Hydroxypyrimidine-5-carboxylic acid, 97% (CAS 38324-83-3)
- 3-Oxo-2,3-dihydropyridazine-4-carboxylic Acid (CAS 54404-06-7)
- 3,4-Dimethyl-4-thiomorpholinomethyl benzophenone (CAS 898782-79-1)
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- CAS 33434-24-1 (CAS 33434-24-1)
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- 3-Fluoro-4-(tetrahydro-2H-pyran-2-ylmethoxy)-phenylamine 4044AF 946698-98-2 C12H16FNO2 (CAS 946698-98-2)
- 2-Bromo-1-(pyrrolidin-1-yl)butan-1-one (CAS 1119450-19-9)
- 5-formylthiophene-3-carbonitrile (CAS 51770-04-8)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com