3-methyl-5-Isoxazolecarboxylicacid ethyl ester CAS 63366-79-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 63366-79-0 |
| Molecular Formula | C7H9NO3 |
| Molecular Weight | 155.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-methyl-5-Isoxazolecarboxylicacid ethyl ester (CAS 63366-79-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H9NO3. Molecular weight: 155.15 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
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.) | 1975 |
| Nitrogen Atoms | 1 |
Related methyl Standards
- 5-methyl-4-Isoxazolecarboxylicacid methyl ester (CAS 100047-54-9)
- 150517-80-9 3-Isoxazolecarboxylicacid, 5-(2-methylpropyl)- ACMC-20eais (CAS 150517-80-9)
- 3-Isoxazolecarboxylicacid, 5-(4-chlorophenyl)-, hydrazide 91587-71-2 CTK3I6048 (CAS 91587-71-2)
- 3-Isoxazolecarboxylicacid, 5-(4-bromophenyl)-, ethyl ester 33277-15-5 CTK4H0310 (CAS 33277-15-5)
Recommended Standards
- 3-Isopropyl-4-nitro-1H-pyrazole (CAS 51355-77-2)
- 3-Oxa-1-azaspiro[4.4]nonane-2,4-dione (CAS 3253-44-9)
- 3-Isopropyl-1H-1,2,4-triazole-5-carboxylic acid (CAS 944906-51-8)
- 2-(3-Morpholinopropyl)isoindoline-1,3-dione (CAS 6820-95-7)
- N-(2,5-Difluorobenzyl)-3-methyl-1-propyl-1H-pyrazol-4-amine hydrochloride (CAS 1856101-27-3)
- 2-(Piperidin-4-yl)benzo[d]oxazole dihydrochloride (CAS 893424-33-4)
- (4-Methyl-1H-pyrrol-2-yl)methanol (CAS 151417-49-1)
- 1-(5-Chloro-1-methyl-1h-imidazol-2-yl)-2,2,2-trifluoroethan-1-ol (CAS 923688-29-3)
- (R)-2-(benzofuran-3-yl)-1-((3aS,4R,6R,7aR)-3a,5,5-trimethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborol-2-yl)ethan-1-amine hydrochloride (CAS 1897396-17-6)
- D-β-Asp15-Tirzepatide (CAS CATO-CPTD788930)
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