1-Isoxazol-4-yl-ethanone CAS 83259-37-4
| CAS No. | 83259-37-4 |
| Molecular Formula | C5H5NO2 |
| Molecular Weight | 111.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Isoxazol-4-yl-ethanone (CAS 83259-37-4), molecular formula C5H5NO2 and molecular weight 111.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H5NO2, 1-Isoxazol-4-yl-ethanone 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 111.10 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.
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 1-Isoxazol-4-yl-ethanone 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 | C5H5NO2 |
| Molecular Weight | 111.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
Related Isoxazol Standards
- 1-(Isoxazol-5-yl)ethan-1-one (CAS 88511-38-0)
- N-(Isoxazol-4-yl)formamide (CAS 108511-99-5)
- 1-(Isoxazol-3-yl)ethanamine (CAS 1008985-14-5)
- 2-(Isoxazol-5-yl)ethan-1-amine (CAS 1083216-31-2)
- (R)-1-(Isoxazol-3-yl)ethanamine (CAS 1892520-47-6)
- 1-(Isoxazol-3-yl)-N-methylmethanamine (CAS 297172-17-9)
- 1-(Isoxazol-5-yl)ethan-1-amine (CAS 933721-75-6)
- 1-(Isoxazol-5-yl)-N-methylmethanamine (CAS 401647-20-9)
Recommended Standards
- 1-Hydroxy-2(1H)-pyridinone (CAS 822-89-9)
- 1-Methyl-1H-1,2,4-triazole-5-carbaldehyde (CAS 99651-37-3)
- 1H-pyrrole-1-carboxylic acid (CAS 21972-99-6)
- 2-(1H-1,2,4-triazol-5-yl)acetaldehyde (CAS 2228462-10-8)
- 2-(Thietan-3-ylamino)cyclopentane-1-carboxamide (CAS 1866560-12-4)
- Ethyl Benzo[6,7]-4-oxo-4H-quinolizine-3-carboxlate (CAS 101192-30-7)
- 3-Ethyl-8-(pyrrolidin-3-yl)quinoline (CAS 695185-35-4)
- Olmesartan impurity 89 (CAS CATO-C4X-109789)
- Ethyl (R)-2-amino-2-(4-hydroxyphenyl)acetate (CAS 43189-38-4)
- Ethyl 2-(isopropylcarbamoyl)-3-((3-(trifluoromethyl)phenyl)carbamoyl)cyclopropane-1-carboxylate (CAS 318237-97-7)
- Gly-PEG3-endo-BCN (CAS 2354291-37-3)
- 51857-17-1 A1375 N-(6-Aminohexyl)carbamic Acid tert-Butyl Ester N-(tert-Butoxycarbonyl)-1,6-diaminohexane N-(tert-Butoxycarbonyl)-1,6-hexanediamine N-Boc-1,6-diaminohexane N-Boc-1,6-hexanediamine tert-Butyl N-(6-Aminohexyl)carbamate (CAS 51857-17-1)
- 2-Methoxy-n,5-dimethylaniline (CAS 30427-10-2)
- Semaglutide impurity 107 (CAS CATO-C4X-2226107)
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