5-Aminopyrazine-2-carboxylic Acid CAS 40155-43-9
| CAS No. | 40155-43-9 |
| Molecular Formula | C5H5N3O2 |
| Molecular Weight | 139.11 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.
CATO supplies 5-Aminopyrazine-2-carboxylic Acid (CAS 40155-43-9), a certified reference material (molecular formula C5H5N3O2, MW 139.11 g/mol) for analytical method development and quality control.
Structurally, 5-Aminopyrazine-2-carboxylic Acid (C5H5N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 139.11 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 5-Aminopyrazine-2-carboxylic Acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H5N3O2 |
| Molecular Weight | 139.11 g/mol |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 3 |
Related Aminopyrazine Standards
- 6-Aminopyrazine-2-carboxylic Acid (CAS 61442-38-4)
- 3-Aminopyrazine-2-carboxamide (CAS 32587-10-3)
- 5-Aminopyrazine-2-carboxamide (CAS 89323-09-1)
- 6-Aminopyrazine-2-carboxamide (CAS 33332-49-9)
- 3-aminopyrazine-2-thiol (CAS 31613-87-3)
- 3-Aminopyrazine-2,6-dicarbonitrile (CAS 113305-95-6)
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- Methyl 6-Aminopyrazine-2-carboxylate (CAS 118853-60-4)
Recommended Standards
- 4-Oxo-1,4-dihydropyridine-3-carboxylic acid (CAS 72676-96-1)
- 5-Amino-pyridazine-4-carboxylic acid (CAS 21579-37-3)
- 4-Oxo-1,4-dihydropyridine-2-carboxylic acid (CAS 98321-24-5)
- 5-Aminopyrimidine-2-carboxylic Acid (CAS 56621-98-8)
- Methyl (3-(methylthio)phenyl)carbamate (CAS 63379-15-7)
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