4-(Benzenesulfonyl)-5-(3,4-dichlorophenyl)-1-(4-fluorophenyl)-1H-pyrazole CAS 318951-73-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 318951-73-4 |
| Molecular Formula | C21H13Cl2FN2O2S |
| Molecular Weight | 447.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Benzenesulfonyl)-5-(3,4-dichlorophenyl)-1-(4-fluorophenyl)-1H-pyrazole (CAS 318951-73-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C21H13Cl2FN2O2S. Molecular weight: 447.31 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C21H13Cl2FN2O2S |
| Molecular Weight | 447.31 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 | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Benzenesulfonyl Standards
- 4-(Benzenesulfonyl)-1-(2,5-dichlorophenyl)-5-(4-fluorophenyl)-1H-pyrazole (CAS 318951-71-2)
- 3-(Benzenesulfonyl)-N-(2-methoxy-5-methylphenyl)-[1,2,3]triazolo[1,5-a]quinazolin-5-amine (CAS 866811-47-4)
- [5-(Benzenesulfonyl)-1-methyl-3-phenyl-1H-pyrazol-4-yl]methyl 4-fluorobenzoate (CAS 318289-30-4)
- 3-(Benzenesulfonyl)-6,8-dibromo-2H-chromen-2-one (CAS 1351804-74-4)
- (2Z)-2-(Benzenesulfonyl)-3-[3-(2,3-dihydro-1H-inden-5-yl)-1-phenyl-1H-pyrazol-4-yl]prop-2-enenitrile (CAS 956923-23-2)
- 4-(Benzenesulfonyl)-2-[(4-methylphenyl)methanesulfonyl]-5,6,7,8-tetrahydroquinazoline (CAS 478067-50-4)
- 5-(Benzenesulfonyl)-4-(2,4-dichlorophenyl)-2-(pyridin-3-yl)pyrimidine (CAS 339108-13-3)
- 5-(Benzenesulfonyl)-4-(3,4-dichlorophenyl)-2-(pyridin-2-yl)pyrimidine (CAS 339107-70-9)
Recommended Standards
- Lifitegrast Impurity 45 (CAS CATO-C4X-240945)
- 2,5-Dichloro-3,6-bis((4-ethoxyphenyl)amino)cyclohexa-2,5-diene-1,4-dione (CAS 29027-10-9)
- 2,10-Bis(4-chlorophenyl)-1,2,4,9,10,12-hexaazadispiro[4.2.4^{8}.2^{5}]tetradecane-3,11-dione (CAS 338956-29-9)
- Glufosinate-N-Acetyl (CAS 73634-73-8)
- Pyridine-2,4-diyldimethanol (CAS 21071-04-5)
- 2-[(3-Chlorobenzyl)thio]-4,5-dihydro-1H-imidazole hydrochloride (CAS 258347-64-7)
- methyl 3-(pyrimidin-2-ylmethanesulfonyl)propanoate (CAS 1787856-48-7)
- Lenvatinib Impurity 139 (CAS CATO-C4X-1140139)
- 1-(3-bromophenyl)-4-chloro-1H-pyrazolo[3,4-d]pyrimidine (CAS 650628-17-4)
- Semaglutide impurity 48 (CAS CATO-C4X-222648)
Why CATO?
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