4-Chloro-N-((5-((4-chlorobenzyl)thio)-4-ethyl-4H-1,2,4-triazol-3-yl)methyl)benzenesulfonamide CAS 338421-95-7
| CAS No. | 338421-95-7 |
| Molecular Formula | C18H18Cl2N4O2S2 |
| Molecular Weight | 457.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-N-((5-((4-chlorobenzyl)thio)-4-ethyl-4H-1,2,4-triazol-3-yl)methyl)benzenesulfonamide (C18H18Cl2N4O2S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
4-Chloro-N-((5-((4-chlorobenzyl)thio)-4-ethyl-4H-1,2,4-triazol-3-yl)methyl)benzenesulfonamide (CAS 338421-95-7), molecular formula C18H18Cl2N4O2S2 and molecular weight 457.40 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H18Cl2N4O2S2 |
| Molecular Weight | 457.40 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Chloro Standards
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Recommended Standards
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- 5H,6H,7H,8H-Imidazo[1,2-a]pyridin-6-ylmethanamine (CAS 1443137-48-1)
- (S)-N-(1-cyclobutylethylidene)-2-methylpropane-2-sulfinamide (CAS 2102890-98-0)
- 1-(4-Chlorophenyl)-3-(2-hydroxy-1-phenylethyl)urea (CAS 338962-97-3)
- (2R)-2-amino-2-(1-(tert-butoxycarbonyl)-2,2-dimethylpiperidin-4-yl)acetic acid (CAS 2387585-52-4)
- tert-Butyl 4-chloro-6-(tetramethyl-1,3,2-dioxaborolan-2-yl)indazole-1-carboxylate (CAS 2377611-95-3)
- Biotinyl-CBP501 Affinity Peptide trifluoroacetate salt (CAS 2022956-39-2)
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