(E)-5-((4-chlorophenyl)thio)-1-methyl-3-phenyl-1H-pyrazole-4-carbaldehyde O-(2,4-dichlorobenzyl) oxime CAS 321998-27-0
| CAS No. | 321998-27-0 |
| Molecular Formula | C24H18Cl3N3OS |
| Molecular Weight | 502.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C24H18Cl3N3OS, (E)-5-((4-chlorophenyl)thio)-1-methyl-3-phenyl-1H-pyrazole-4-carbaldehyde O-(2,4-dichlorobenzyl) oxime contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 502.84 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
(E)-5-((4-chlorophenyl)thio)-1-methyl-3-phenyl-1H-pyrazole-4-carbaldehyde O-(2,4-dichlorobenzyl) oxime (CAS 321998-27-0), molecular formula C24H18Cl3N3OS and molecular weight 502.84 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 | C24H18Cl3N3OS |
| Molecular Weight | 502.84 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| 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 |
| Sulfur Atoms | 1 |
Related E Standards
- (E)-5-((4-chlorophenyl)thio)-1-methyl-3-phenyl-1H-pyrazole-4-carbaldehyde O-(2,3-dichlorobenzyl) oxime (CAS 321998-28-1)
- {5-[(4-chlorophenyl)sulfanyl]-1-methyl-3-phenyl-1H-pyrazol-4-yl}methyl 3-(trifluoromethyl)benzoate (CAS 318289-02-0)
- 2-((5-(4-Chlorophenyl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)-N-(2-(trifluoromethyl)phenyl)acetamide (CAS 332947-87-2)
- 2-((5-(4-Chlorophenyl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)-N-(3-(trifluoromethyl)phenyl)acetamide (CAS 443740-19-0)
- 4,4'-Bis((4-chlorophenyl)sulfonyl)-1,1'-biphenyl (CAS 22287-56-5)
- 3-(4-(2-(3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl)-2-(4-methoxyphenyl)ethyl)phenyl)isoxazole-5-carboxylic acid (CAS 1373156-28-5)
- (5-((2-Chlorophenyl)thio)-1-methyl-3-phenyl-1H-pyrazol-4-yl)methyl 2,4-dichlorobenzoate (CAS 318959-20-5)
- {5-[(2-chlorophenyl)sulfanyl]-1-methyl-3-phenyl-1H-pyrazol-4-yl}methyl 3,4-dichlorobenzoate (CAS 318497-65-3)
Recommended Standards
- 1-azido-2,3,5-triiodobenzene (CAS 1313738-68-9)
- (3β)-3-(tert-Butyldimethylsilyl)oxy-chol-5-en-24-oic Acid Methyl Ester (CAS 114011-35-7)
- (E)-N'-(1-(2-(4-Chlorobutoxy)phenyl)-2,2,2-trifluoroethylidene)-2-(trifluoromethyl)benzenesulfonohydrazide (CAS 2738683-46-8)
- Regorafenib-13C-d3 N-Oxide (CAS 835621-11-9 (Unlabeled))
- Tert-butyl 4-((3-(trifluoromethyl)phenyl)amino)piperidine-1-carboxylate (CAS 477864-09-8)
- 2-chloro-N-(4-fluoro-3-nitrophenyl)propanamide (CAS 731011-93-1)
- 1,2,3,4-tetrahydroacridin-9-amine (CAS 321-64-2)
- Methyl dimethyldithiocarbamate (CAS 3735-92-0)
- 1-(4-Bromobutyl)-4-methylbenzene (CAS 99857-43-9)
- 2-(Ethoxymethylene)-3,5-dimethylcyclohexan-1-one (CAS 1344823-32-0)
- 3-Methyl-benzamidine (CAS 18465-28-6)
- 5-Bromo-1-(methylsulfonyl)indoline (CAS 446054-18-8)
- Ethyl 1-Benzyl-3-(4-bromophenyl)-1H-pyrazole-5-carboxylate (CAS 948293-14-9)
- (Asp28)-Exenatide trifluoroacetate salt (CAS 1678417-24-7)
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