4-(Benzenesulfonyl)-5-(4-chlorophenyl)-1-(4-methoxyphenyl)-1H-pyrazole CAS 318951-66-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 318951-66-5 |
| Molecular Formula | C22H17ClN2O3S |
| Molecular Weight | 424.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Benzenesulfonyl)-5-(4-chlorophenyl)-1-(4-methoxyphenyl)-1H-pyrazole (CAS 318951-66-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C22H17ClN2O3S. Molecular weight: 424.90 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C22H17ClN2O3S |
| Molecular Weight | 424.90 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 Benzenesulfonyl Standards
- 4-[(Benzenesulfonyl)methyl]-6-[(2,4-dichlorophenyl)sulfanyl]-2-methylpyrimidine (CAS 338960-51-3)
- 5-(Benzenesulfonyl)-4-(2,4-difluorophenoxy)-2-phenylpyrimidine (CAS 478080-97-6)
- 3-(Benzenesulfonyl)-2-(4-chlorobenzoyl)-5-(trifluoromethyl)pyridine (CAS 338960-06-8)
- N'-[1-(Benzenesulfonyl)piperidin-4-ylidene]-3,4-dichlorobenzohydrazide (CAS 478248-25-8)
- 3-(Benzenesulfonyl)-4,6-dimethyl-2-{[3-(trifluoromethyl)phenyl]sulfanyl}pyridine (CAS 339017-02-6)
- 1-(Benzenesulfonyl)-N-(4-bromophenyl)piperidine-4-carboxamide (CAS 591238-02-7)
- (2E)-3-[1-(Benzenesulfonyl)-1H-indol-5-yl]-N-(oxan-2-yloxy)prop-2-enamide (CAS 951655-99-5)
- 4-[(Benzenesulfonyl)methyl]-6-[4-(2-fluorophenyl)piperazin-1-yl]-2-methylpyrimidine (CAS 338960-49-9)
Recommended Standards
- 2-(4-Chlorophenyl)-5-{2-[(4-methylphenyl)methanesulfonyl]phenyl}-1,3,4-oxadiazole (CAS 339104-33-5)
- 2-(Difluoromethyl)-4,5-diiodopyridine-3-carboxylic acid (CAS 1805048-99-0)
- 2-(2-((4-Chlorobenzyl)sulfonyl)phenyl)-5-(p-tolyl)-1,3,4-oxadiazole (CAS 339104-24-4)
- Methyl 3-chloro-2-nitrobenzoate (CAS 42087-81-0)
- 2-[(6-chloropyrimidin-4-yl)amino]butan-1-ol (CAS 446273-79-6)
- 2-(3-Fluorophenyl)quinazolin-4(3H)-one (CAS 138867-17-1)
- Salbutamol Impurity M HCl (CAS 18910-70-8（free base）)
- N-(6-(Butylamino)-2-(diethylamino)pyrimidin-4-yl)acetamide (CAS 88380-68-1)
- 1-(2-Phenylcyclopropyl)ethan-1-one (CAS 827-92-9)
- Peptide Impurity 24 (CAS CATO-CPTD788824)
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