Methyl 5-[1-(3-chlorophenyl)-3-(ethoxycarbonyl)-1H-pyrazol-4-yl]-3-(2,6-dichlorophenyl)-1,2-oxazole-4-carboxylate CAS 321571-37-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 321571-37-3 |
| Molecular Formula | C23H16Cl3N3O5 |
| Molecular Weight | 520.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 5-[1-(3-chlorophenyl)-3-(ethoxycarbonyl)-1H-pyrazol-4-yl]-3-(2,6-dichlorophenyl)-1,2-oxazole-4-carboxylate (CAS 321571-37-3) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C23H16Cl3N3O5. Molecular weight: 520.75 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
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-(2-chlorophenyl)-3-(ethoxycarbonyl)-1H-pyrazol-4-yl)-3-(2,6-dichlorophenyl)isoxazole-4-carboxylate (CAS 321571-33-9)
- (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
- 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)
- Dronedarone Impurity 97 (CAS CATO-C4X-109297)
- (5-((4-Bromophenyl)thio)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl (4-chlorophenyl)carbamate (CAS 318239-62-2)
- tert-Butyl 6-iodo-3-azabicyclo[3.1.1]heptane-3-carboxylate (CAS 2852760-67-7)
- (3S,4R)-4-(3-fluorophenyl)-1-(2-methoxyethyl)pyrrolidine-3-carboxylic acid (CAS 1824664-85-8)
- (Butan-2-yl)[(2-chlorophenyl)methyl]amine (CAS 46191-71-3)
- 3-Oxo-1-(4-(trifluoromethyl)phenyl)cyclohexanecarbonitrile (CAS 1956386-16-5)
- 2-Oxo-4-phenyl-1-(3-(trifluoromethyl)benzyl)-1,2-dihydropyridine-3-carbonitrile (CAS 478080-29-4)
- 1-Iodo-4-(1,1,2,2-tetrafluoroethoxy)benzene (CAS 863323-03-9)
- [His]1-Acetylated Semaglutide (CAS CATO-C4X-2226219)
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