3-[2-Chloro-4-(4-chlorophenoxy)phenyl]-1-(4-chlorobenzenesulfonyl)-1H-pyrazole CAS 321522-28-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 321522-28-5 |
| Molecular Formula | C21H13Cl3N2O3S |
| Molecular Weight | 479.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-[2-Chloro-4-(4-chlorophenoxy)phenyl]-1-(4-chlorobenzenesulfonyl)-1H-pyrazole (CAS 321522-28-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C21H13Cl3N2O3S. Molecular weight: 479.76 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C21H13Cl3N2O3S |
| Molecular Weight | 479.76 g/mol |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
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- N-[(4-Chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridin-5-yl)carbonyl]-N'-[3,5-di(trifluoromethyl)phenyl]urea (CAS 650615-81-9)
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Recommended Standards
- 2-(4-Chlorobenzoyl)-3-[(2,4-dichlorobenzenesulfonyl)methyl]-1-benzofuran (CAS 338411-58-8)
- Tert-butyl ((1R,3S)-3-((5-chloro-4-iodopyridin-2-yl)carbamoyl)cyclohexyl)carbamate (CAS 2057506-94-0)
- 9-((2R,4S,5R)-4-((tert-Butyldimethylsilyl)oxy)-5-(((tert-butyldimethylsilyl)oxy)methyl)tetrahydrofuran-2-yl)-9H-purin-6-amine (CAS 51549-32-7)
- (4-Bromo-1H-pyrazol-1-yl)(phenyl)methanone (CAS 116228-39-8)
- Mecarbam (CAS 2595-54-2)
- cis-Permethrin EP Impurity G (CAS 85576-82-5)
- (2Z)-2-[(4-Methylphenyl)methylidene]-2,3,4,9-tetrahydro-1H-carbazol-1-one (CAS 1164469-52-6)
- 2,6-diazaspiro[3.4]octan-5-one;hydrochloride (CAS 1203683-28-6)
- 2,7-Naphthyridine-4-carbaldehyde (CAS 10273-40-2)
- Tripeptide-10 citrulline (CAS 960531-53-7)
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