5-Cyano-4H-1,2,4-triazole-3-carboxylic acid CAS 26663-11-6
| CAS No. | 26663-11-6 |
| Molecular Formula | C4H2N4O2 |
| Molecular Weight | 138.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Cyano-4H-1,2,4-triazole-3-carboxylic acid (CAS 26663-11-6) is a high-purity analytical reference standard with the molecular formula C4H2N4O2 and a molecular weight of 138.08 g/mol.
5-Cyano-4H-1,2,4-triazole-3-carboxylic acid (C4H2N4O2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Cyano-4H-1,2,4-triazole-3-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.
Physical & Chemical Properties
| Molecular Formula | C4H2N4O2 |
| Molecular Weight | 138.08 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 4 |
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Recommended Standards
- 4-Nitroimidazole-5-carbonitrile (CAS 208510-03-6)
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- CAS 781596-75-6 (CAS 781596-75-6)
- 6,8-Difluoro-2-methyl-1-(2-oxopropyl)quinolin-4(1H)-one (CAS 1211719-87-7)
- 3-(4-chlorophenyl)-2,1-benzisoxazole-5-carbaldehyde oxime (CAS 344276-67-1)
- 1,3,5-Tris(pyridin-3-ylethynyl)benzene (CAS 1118753-42-6)
- Ethyl 2-(5-oxo-4-(4-(trifluoromethoxy)phenyl)-4,5-dihydro-1H-1,2,4-triazol-1-yl)acetate (CAS 866149-41-9)
- O-Benzoyl-N-phenylhydroxylamine (CAS 82461-60-7)
- (6-(4-Methylpiperidin-1-yl)pyridin-2-yl)boronic acid (CAS 1310404-14-8)
- 4-(4-Pentyn-1-yl)morpholine (CAS 14044-59-8)
- Toceranib, 98% (CAS 356068-94-5)
- 1216398-85-4 4-[4-(4-Chloro-3-nitrophenyl)-1,3-thiazol-2-yl]piperidine (CAS 1216398-85-4)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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