Ethyl 3-Ethylisoxazole-4-carboxylate CAS 639523-11-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 639523-11-8 |
| Molecular Formula | C8H11NO3 |
| Molecular Weight | 169.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 3-Ethylisoxazole-4-carboxylate (CAS 639523-11-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H11NO3. Molecular weight: 169.18 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H11NO3 |
| Molecular Weight | 169.18 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 |
| 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.) | 1985 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- Ethyl 5-ethylisoxazole-4-carboxylate (CAS 134540-94-6)
- Ethyl 3-ethylisoxazole-5-carboxylate (CAS 90087-37-9)
- Ethyl 5-ethylisoxazole-3-carboxylate (CAS 90607-22-0)
- 3-Ethylisoxazole-5-carbonyl chloride (CAS 80173-67-7)
- 5-Ethylisoxazole-4-carbonyl chloride (CAS 99803-82-4)
- 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)
Recommended Standards
- Ethyl 3-(hydroxymethyl)-1H-pyrrole-2-carboxylate (CAS 75448-69-0)
- Ethyl 3-(aminomethyl)furan-2-carboxylate (CAS 944467-96-3)
- Ethyl 4-Amino-1-methyl-5-imidazolecarboxylate (CAS 61982-18-1)
- (2S,2'S)-1,1'-((S,2S,2'S)-2,2'-(((1S,1'S,2R,2'R)-(Hexa-2,4-diyne-1,6-diylbis(oxy))bis(2,3-dihydro-1H-indene-2,1-diyl))bis(cyclohexane-3,1-diyl))bis(2-((S)-2-(methylamino)propanamido)acetyl))bis(pyrrolidine-2-carboxamide) (CAS 1258392-53-8)
- 1-(2,3-Dihydro-1,4-benzodioxin-6-yl)pyrrolidine-2,5-dione (CAS 328263-27-0)
- Lithium perfluoro(2,6-dimethyl-5-oxaheptane 2-oxide) (CAS 78740-39-3)
- 2-(Difluoromethyl)-6-methyl-3-nitropyridine-5-carboxaldehyde (CAS 1806998-82-2)
- 6-Chloro-7-methyl-1H-indole (CAS 57817-09-1)
- (S)-2-Amino-N-(4-(N-ethylacetamido)cyclohexyl)-3-methylbutanamide (CAS 1354003-45-4)
- Peptide Impurity 15 (CAS 1227750-69-7)
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 13829788188 / jacky.chen@cato-chem.com