Methyl 5-(1-(2-chlorophenyl)-3-(ethoxycarbonyl)-1H-pyrazol-4-yl)-3-(2,6-dichlorophenyl)isoxazole-4-carboxylate CAS 321571-33-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 321571-33-9 |
| Molecular Formula | C23H16Cl3N3O5 |
| Molecular Weight | 520.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 5-(1-(2-chlorophenyl)-3-(ethoxycarbonyl)-1H-pyrazol-4-yl)-3-(2,6-dichlorophenyl)isoxazole-4-carboxylate (CAS 321571-33-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C23H16Cl3N3O5. Molecular weight: 520.75 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C23H16Cl3N3O5 |
| Molecular Weight | 520.75 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- Methyl 3-(2-chlorophenyl)-5-(1-(2,4-dichlorophenyl)-3-(ethoxycarbonyl)-1H-pyrazol-4-yl)isoxazole-4-carboxylate (CAS 321571-31-7)
- Methyl 5-[1-(3-chlorophenyl)-3-(ethoxycarbonyl)-1H-pyrazol-4-yl]-3-(2,6-dichlorophenyl)-1,2-oxazole-4-carboxylate (CAS 321571-37-3)
- (R)-2-[[4-chlorophenyl)sulfonyl][[2-fluoro-4-(1,2,4-oxadiazol-3-yl)phenyl]methyl]amino]-5,5,5-trifluoropentanamide (CAS 1146699-66-2)
- 2-(4-(3-Chlorophenyl)piperazin-1-yl)-N-(4-((2,4-dichlorobenzyl)thio)phenyl)acetamide (CAS 329779-63-7)
- 5-[(4-Chlorophenyl)sulfanyl]-4-(2,4-dichlorophenyl)-2-[5-(thiophen-2-yl)-1H-pyrazol-1-yl]-1,3-thiazole (CAS 956182-65-3)
- 1-{5-[(4-chlorophenyl)sulfanyl]-4-(4-methoxyphenyl)-1,3-thiazol-2-yl}-4-(4-methoxyphenyl)-1H-pyrazol-5-amine (CAS 956977-32-5)
- 2-((4-(2-Chlorophenyl)-6-(4-chlorophenyl)-3-cyanopyridin-2-yl)thio)-N-(4-methoxyphenyl)acetamide (CAS 337936-16-0)
- 4-({[(4-chlorophenyl)methyl]sulfanyl}methyl)-6-[4-(3-chlorophenyl)piperazin-1-yl]-2-phenylpyrimidine (CAS 338967-29-6)
Recommended Standards
- (5-((4-Bromophenyl)thio)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl (4-chlorophenyl)carbamate (CAS 318239-62-2)
- 1-(2-Aminoethyl)-3-(4-(hydroxy((1,1,4,4,5,5,8,8-octamethyl-1,2,3,4,5,6,7,8-octahydroanthracen-9-yl)amino)methyl)phenyl)urea (CAS CATO-C3D-262694)
- N-[(4-Methylphenyl)methyl]-6-[4-(5-{[(4-methylphenyl)methyl]carbamoyl}pentyl)piperazin-1-yl]hexanamide (CAS 1424350-54-8)
- N-(1-isopropoxyethyl)acetamide (CAS 115910-75-3)
- 2-(3,4-Difluorophenoxy)-5-fluoronicotinic acid (CAS 1157093-09-8)
- Methyl 6-(4-(difluoromethoxy)phenyl)-3-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1011399-93-1)
- Levofloxacin Impurity 22 (CAS 82419-46-3)
- Ethyl 2-(4-isopropylphenyl)thiazole-4-carboxylate (CAS 886368-07-6)
- Ethyl 2-fluoro-3-methylbut-2-enoate (CAS 685-89-2)
- Insulin Detemir (CAS 169148-63-4)
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