1-(5-Nitroisoxazol-3-yl)ethanone CAS 340014-77-9
| CAS No. | 340014-77-9 |
| Molecular Formula | C5H4N2O4 |
| Molecular Weight | 156.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1-(5-Nitroisoxazol-3-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.
1-(5-Nitroisoxazol-3-yl)ethanone (CAS 340014-77-9) is a high-purity analytical reference standard with the molecular formula C5H4N2O4 and a molecular weight of 156.10 g/mol.
The molecular framework of 1-(5-Nitroisoxazol-3-yl)ethanone (C5H4N2O4) is characterized by a carbohydrate-derived structure, an amide group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C5H4N2O4 |
| Molecular Weight | 156.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Nitroisoxazol Standards
- 1-(3-Nitroisoxazol-5-yl)ethanone (CAS 54468-91-6)
- 1-(4-Nitroisoxazol-3-yl)ethanone (CAS 550301-44-5)
- 1-(4-Nitroisoxazol-5-yl)ethanone (CAS 518994-53-1)
- 2-(4-Nitroisoxazol-3-yl)acetaldehyde (CAS 87149-77-7)
- 2-Methyl-4-nitroisoxazol-5(2H)-one (CAS 138842-45-2)
- 3-Methyl-4-nitroisoxazol-5-amine (CAS 41230-51-7)
- 4-Nitroisoxazol-5(2H)-one (CAS 145440-80-8)
- 4-Nitroisoxazol-5-amine (CAS 861543-32-0)
Recommended Standards
- 1,1,1-Trifluoropropan-2-yl acetate (CAS 400-37-3)
- 1,2,5-Oxadiazole-3,4-dicarboxamide (CAS 56873-33-7)
- 1,3,5-Triazine-2,4,6-tricarbonitrile (CAS 7615-57-8)
- (R)-4,4,4-Trifluoro-3-methylbutanoic acid (CAS 835629-56-6)
- Ethyl 1-(4-chlorophenyl)cyclopropane-1-carboxylate (CAS 148992-58-9)
- 4-((2-Fluorophenoxy)methyl)benzaldehyde (CAS 1443304-00-4)
- 5-Methylfuran-3(2H)-one (CAS 3511-32-8)
- Ethyl 1-isopropyl-1H-benzo[d]imidazole-5-carboxylate (CAS 1820736-57-9)
- 2-amino-1,1-dicyclopropylethan-1-ol (CAS 960248-09-3)
- Tert-butyl 4,4-difluoro-2,9-diazaspiro[5.5]Undecane-2-carboxylate (CAS 1263181-42-5)
- 1-amino-4,6-dimethyl-2-oxo-1,2-dihydropyridine-3-carboxamide (CAS 98594-44-6)
- tert-butyl cis-N-[4-(spiro[3.3]heptan-2-ylamino)cyclohexyl]carbamate (CAS 2277444-51-4)
- Methyl 2-ethynyl-4-methylbenzoate (CAS 2113642-19-4)
- Hexapeptide-10 (CAS 146439-94-3)
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