1,2,4-Oxadiazole-3-carboxamide CAS 39512-74-8
| CAS No. | 39512-74-8 |
| Molecular Formula | C3H3N3O2 |
| Molecular Weight | 113.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,2,4-Oxadiazole-3-carboxamide (CAS 39512-74-8), molecular formula C3H3N3O2 and molecular weight 113.07 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1,2,4-Oxadiazole-3-carboxamide is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 113.07 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C3H3N3O2 |
| Molecular Weight | 113.07 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 3 |
Related Oxadiazole Standards
- 4-methyl-1,2,5-oxadiazole-3-carbonitrile (CAS 10349-10-7)
- 2-Propyl-1,3,4-oxadiazole (CAS 13148-62-4)
- 4-Methyl-1,2,5-oxadiazole-3-carbaldehyde (CAS 90507-35-0)
- 1,2,4-Oxadiazole-3-carboxylic Acid (CAS 856787-15-0)
- 1,2,4-Oxadiazole-5-carboxylic acid (CAS 499770-64-8)
- 1,2,5-Oxadiazole-3-carboxylic Acid (CAS 88598-08-7)
- 5-methyl-1,2,4-oxadiazole-3-carbaldehyde (CAS 1083300-23-5)
- 5-methyl-1,3,4-oxadiazole-2-carbaldehyde (CAS 164024-09-3)
Recommended Standards
- 1,2,3-Triazole-2-carboxylic acid (CAS 392317-68-9)
- 1-Nitropyrazole (CAS 7119-95-1)
- (E)-2-amino-N-hydroxy-2-oxoacetimidoyl cyanide (CAS 262291-71-4)
- 2H-1,2,3-Triazole-4-carboxylic acid (CAS 573714-78-0)
- 1-(But-3-en-1-yl)-4-chlorobenzene (CAS 3047-24-3)
- 3-Ethyl-1-phenylhept-1-yn-3-ol (CAS 19781-33-0)
- 3-(4-Nitrophenyl)-5-(1-phenylpropyl)-1,2,4-oxadiazole (CAS 434312-23-9)
- 2,2,5,5-tetramethyloxolan-3-amine (CAS 857821-82-0)
- 4,4'-(2,3-Dimethylbutane-1,4-diyl)bis(2-methoxyphenol) (CAS 36469-60-0)
- Ethyl 4-(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)butanoate (CAS 1392141-01-3)
- 2-[5-(3,4-dimethoxyphenyl)-2h-1,2,3,4-tetrazol-2-yl]acetic acid (CAS 91759-61-4)
- 6-(2,2,2-Trifluoroethoxy)pyridine-3-carbonitrile (CAS 159981-18-7)
- 3,4-Dichloroguaiacol (CAS 77102-94-4)
- Tau Peptide (512-525) amide trifluoroacetate salt (CAS 2022956-61-0)
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