3-Ethyl-1,2,4-oxadiazol-5-amine CAS 3663-40-9
| CAS No. | 3663-40-9 |
| Molecular Formula | C4H7N3O |
| Molecular Weight | 113.12 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.
3-Ethyl-1,2,4-oxadiazol-5-amine (CAS 3663-40-9), molecular formula C4H7N3O and molecular weight 113.12 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a hydroxyl group, an ether linkage, 3-Ethyl-1,2,4-oxadiazol-5-amine is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 113.12 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).
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 | C4H7N3O |
| Molecular Weight | 113.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 2-(1,2,4-Oxadiazol-5-yl)ethan-1-amine (CAS 1083396-12-6)
- 1-(1,2,4-Oxadiazol-3-yl)ethan-1-amine (CAS 1092297-87-4)
- [(5-Methyl-1,3,4-oxadiazol-2-yl)methyl]amine (CAS 125295-22-9)
- 5-Ethyl-1,2,4-oxadiazol-3-amine (CAS 171006-96-5)
- (3-Methyl-1,2,4-oxadiazol-5-yl)methanamine (CAS 90928-92-0)
- (5-Methyl-1,2,4-oxadiazol-3-yl)methanamine (CAS 54435-03-9)
- 2-(1,2,4-Oxadiazol-3-yl)ethan-1-amine (CAS 856311-41-6)
- 2-(1,3,4-Oxadiazol-2-yl)ethan-1-amine (CAS 944907-22-6)
Recommended Standards
- 3-Amino-1-methyl-4,5-dihydro-1h-pyrazol-5-one (CAS 54235-29-9)
- 3-Hydrazineyl-5-methylisoxazole (CAS 299170-19-7)
- 3,4-dimethyl-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 54770-19-3)
- 3-Hydroxymethyl-2-methyl-1,2,4-triazole (CAS 91616-36-3)
- Ethyl 5-(2,5-dimethoxyphenyl)-5-oxopentanoate (CAS 898758-29-7)
- Butyraldehyde 2,4-Dinitrophenylhydrazone-3,5,6-d3 (CAS 259824-54-9)
- (2-Cyclohexylcyclopropyl)methanamine (CAS 1284464-67-0)
- 4-Chloro-2-(5-chloro-2-fluorophenyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidine (CAS 1266522-90-0)
- 7-Bromo-3-chloro-1H-pyrrolo[2,3-c]pyridine (CAS 1190309-88-6)
- 3-Bromo-2,5-dimethylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 937601-34-8)
- 4-(Piperazin-1-ylmethyl)benzoic acid hydrochloride (CAS 1394820-15-5)
- 1,2-Dibromo-4,5-bis(octyloxy)benzene (CAS 118132-04-0)
- Benzene-1,2,3-triamine dihydrochloride (CAS 66046-54-6)
- Semaglutide Sodium Salt (CAS CATO-C4X-222620)
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