2-Cyanooxazole-4-carboxylic acid CAS 1167056-75-8
| CAS No. | 1167056-75-8 |
| Molecular Formula | C5H2N2O3 |
| Molecular Weight | 138.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 138.08 g/mol gives 2-Cyanooxazole-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Cyanooxazole-4-carboxylic acid (CAS 1167056-75-8) is a high-purity analytical reference standard with the molecular formula C5H2N2O3 and a molecular weight of 138.08 g/mol.
Based on its molecular formula C5H2N2O3, 2-Cyanooxazole-4-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 138.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 2-Cyanooxazole-4-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 | C5H2N2O3 |
| 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 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 |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Hexa-2,4-diynedioic acid (CAS 1072-17-9)
- 5-Nitro-1H-pyrazole-3-carbonitrile (CAS 1204246-72-9)
- 407-33-0 Fluoroacetic anhydride Acetic acid, 2-fluoro-, 1,1'-anhydride Acetic acid, fluoro-, anhydride EINECS 206-983-4 (CAS 407-33-0)
- 5-Cyanoisoxazole-3-carboxylic acid (CAS 1368193-26-3)
- 4-(Ethylthio)-2-formamidobutanoic acid (CAS 126872-00-2)
- Cis-8,9b-dimethyl-1,4,4a,9b-tetrahydrodibenzo[b,d]furan (CAS 89228-59-1)
- 2-Bromo-4,5-dimethoxyphenethylamine (CAS 63375-81-5)
- 1-(4-(4,4,6-Trimethyl-1,3,2-dioxaborinan-2-yl)phenyl)ethan-1-one (CAS 934558-34-6)
- 2-(4-Oxoquinazolin-3(4H)-yl)acetic acid, 97% (CAS 14663-53-7)
- Ethyl 5-ethyl-1,3-oxazole-4-carboxylate (CAS 32968-45-9)
- 3-((Tetrahydrofuran-3-yl)oxy)aniline (CAS 929194-95-6)
- 4-(5-Methyl-1H-1,2,4-triazol-3-yl)aniline (CAS 518065-43-5)
- (R)-1,2-Dibenzylpiperazine (CAS 198973-94-3)
- Semaglutide-d15 (CAS 910463-68-2(non-labelled))
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com