3-Methyl-4-nitroisoxazole-5-carboxylic acid CAS 89282-13-3
| CAS No. | 89282-13-3 |
| Molecular Formula | C5H4N2O5 |
| Molecular Weight | 172.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Methyl-4-nitroisoxazole-5-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.
3-Methyl-4-nitroisoxazole-5-carboxylic acid (CAS 89282-13-3), molecular formula C5H4N2O5 and molecular weight 172.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H4N2O5, 3-Methyl-4-nitroisoxazole-5-carboxylic acid contains a carbohydrate-derived structure, an amide group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 172.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H4N2O5 |
| Molecular Weight | 172.10 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.) | 1982 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- Methyl 5-nitroisoxazole-3-carboxylate (CAS 1367269-14-4)
- 5-Methyl-4-nitroisoxazole-3-carboxylic Acid (CAS 960225-75-6)
- Methyl 3-nitroisoxazole-5-carboxylate (CAS 40995-06-0)
- Ethyl 3-nitroisoxazole-5-carboxylate (CAS 1224593-92-3)
- Ethyl 5-nitroisoxazole-3-carboxylate (CAS 155088-43-0)
- 5-Nitroisoxazole-3-carboxylic acid (CAS 1368191-38-1)
- 3-Nitroisoxazole-5-carboxamide (CAS 1224594-00-6)
- 3-Methyl-4-nitroisoxazole-5-carbaldehyde (CAS 6436-64-2)
Recommended Standards
- 3,3,3-Trifluoro-2-methoxy-2-methylpropanoic acid (CAS 56135-02-5)
- 4,4,4-Trifluoro-3-hydroxy-3-methylbutanoic acid (CAS 338-03-4)
- 2-Oxo-2,3-dihydro-1H-imidazole-4,5-dicarboxylic acid (CAS 69579-38-0)
- 5-Methyl-3,4-dinitro-1h-pyrazole (CAS 38859-00-6)
- 4'-Amino-3'-fluoro[1,1'-biphenyl]-4-carbaldehyde (CAS 893738-01-7)
- (Deamino-Cys1,Val4,D-Arg8)-Vasopressin (CAS 43157-23-9)
- 1-(tert-Butyl) 2-ethyl 3-aminopiperidine-1,2-dicarboxylate (CAS 2103318-32-5)
- 3-Bromo-2-methoxy-5-nitropyridine (CAS 15862-50-7)
- 1-(3,5-Difluorophenyl)cyclopropanecarboxylic Acid (CAS 1250510-22-5)
- 2-Chloro-3-{[2-(piperidin-1-yl)ethyl]amino}-1,4-dihydronaphthalene-1,4-dione (CAS 135127-51-4)
- 2-(4-Bromophenyl)imidazo[1,2-a]pyridine-6-carboxylic acid (CAS 452967-18-9)
- 4-(4-Pentyloxybenzoyl)isoquinoline (CAS 1187171-67-0)
- 4,7-Dibromo-2-(2-hexyldecyl)-1H-isoindole-1,3(2H)-dione (CAS 1612792-27-4)
- Semaglutide impurity 247 (CAS CATO-C4X-2226247)
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