Methyl 5-ethylisoxazole-4-carboxylate CAS 954229-90-4
| CAS No. | 954229-90-4 |
| Molecular Formula | C7H9NO3 |
| Molecular Weight | 155.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Methyl 5-ethylisoxazole-4-carboxylate (CAS 954229-90-4), a certified reference material (molecular formula C7H9NO3, MW 155.15 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H9NO3, Methyl 5-ethylisoxazole-4-carboxylate 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 155.15 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.
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.
CATO manufactures Methyl 5-ethylisoxazole-4-carboxylate 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 | C7H9NO3 |
| Molecular Weight | 155.15 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- Methyl 3-Ethylisoxazole-4-carboxylate (CAS 1402812-89-8)
- 5-Ethylisoxazole-3-carbohydrazide (CAS 707536-50-3)
- Methyl 3-ethylisoxazole-5-carboxylate (CAS 910321-87-8)
- 3-Ethylisoxazole-5-carbonyl chloride (CAS 80173-67-7)
- 5-Ethylisoxazole-4-carbonyl chloride (CAS 99803-82-4)
- Ethyl 5-ethylisoxazole-4-carboxylate (CAS 134540-94-6)
- 3-Ethylisoxazole-5-carboxylic acid (CAS 14633-21-7)
- 4-Ethylisoxazole-5-carboxylic acid (CAS 1518161-26-6)
Recommended Standards
- Methyl 5-Amino-1-methylpyrazole-3-carboxylate (CAS 92406-53-6)
- methyl trans-3-azidocyclobutanecarboxylate (CAS 79584-09-1)
- Methyl 5-(hydroxymethyl)furan-2-carbimidate (CAS 89149-71-3)
- N-(2-Hydroxyethyl)-2H-pyrazole-3-carboxamide (CAS 405278-69-5)
- 2-[(4-Ethylphenyl)amino]nicotinic acid (CAS 55285-32-0)
- (1-Methyl-1H-imidazol-2-yl)(pyridin-2-yl)methanone (CAS 86165-87-9)
- 2-Bromo-5-fluoro-4-methylbenzoic acid (CAS 1003709-54-3)
- 6-({[(tert-butoxy)carbonyl]amino}methyl)-2-cyclopropylpyridine-3-carboxylic acid (CAS 1432678-21-1)
- Methyl 2-(4-phenylbut-3-en-2-ylidene)-1-(((2-((2E,3E)-4-phenylbut-3-en-2-ylidene)hydrazine-1-carbonyl)oxy)methyl)hydrazine-1-carboxylate (CAS 358723-68-9)
- 2-(4-Chloro-3-fluorophenyl)-1-methylpyrrolidin-3-amine (CAS 1340454-17-2)
- 3-Acetamidobenzenesulfonyl Chloride (CAS 23905-46-6)
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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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