5-[(E)-1-(4-Chlorophenoxy)-2-phenylethenyl]-1-(2,4-dichlorobenzenesulfonyl)-1H-pyrazole CAS 400085-92-9
| CAS No. | 400085-92-9 |
| Molecular Formula | C23H15Cl3N2O3S |
| Molecular Weight | 505.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-[(E)-1-(4-Chlorophenoxy)-2-phenylethenyl]-1-(2,4-dichlorobenzenesulfonyl)-1H-pyrazole (CAS 400085-92-9), molecular formula C23H15Cl3N2O3S and molecular weight 505.80 g/mol, is a CATO reference standard with documented purity and traceability.
5-[(E)-1-(4-Chlorophenoxy)-2-phenylethenyl]-1-(2,4-dichlorobenzenesulfonyl)-1H-pyrazole (C23H15Cl3N2O3S) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C23H15Cl3N2O3S |
| Molecular Weight | 505.80 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) | 16.0 |
| 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 E Standards
- Methyl 2-(2-(4-chlorophenoxy)acetamido)-5-((2-ethoxyphenyl)carbamoyl)-4-methylthiophene-3-carboxylate (CAS 505095-79-4)
- 2-((5-((4-Chlorophenoxy)methyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)-N-(naphthalen-1-yl)acetamide (CAS 332948-45-5)
- 8-((4-chlorophenoxy)(phenyl)methylene)-2,4-diphenyl-5,6,7,8-tetrahydroquinoline (CAS 89409-21-2)
- 5-[2-(3-Chlorophenoxy)phenyl]-2-(1,2,3,4-tetrahydroisoquinolin-1-yl)-4-(1H-1,2,4-triazol-1-yl)cyclohexane-1,3-dione (CAS 1005039-85-9)
- 3-(4-Chlorophenoxy)-8-((diisobutylamino)methyl)-7-hydroxy-2-(trifluoromethyl)-4H-chromen-4-one (CAS 685861-37-4)
- (9Z)-9-{[3-(4-chlorophenoxy)phenyl]methylidene}-4,10-dithia-1-azatetracyclo[9.7.0.0^{3,7}.0^{12,17}]octadeca-3(7),5,12(17),13,15-pentaene-8,18-dione (CAS 866008-37-9)
- 2-((4-Butyl-5-((4-chlorophenoxy)methyl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-butylphenyl)acetamide (CAS 720667-82-3)
- Methyl 2-(2-(4-chlorophenoxy)acetamido)-5-((2,4-dimethylphenyl)carbamoyl)-4-methylthiophene-3-carboxylate (CAS 332923-64-5)
Recommended Standards
- 2-((5-(4-Hydroxyphenyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)-N-(2,4,6-trichlorophenyl)acetamide (CAS 332906-56-6)
- SB 657510 (CAS 474960-44-6)
- 8-(5-Chloro-1-(2,4-dichlorophenyl)-6-oxo-1,6-dihydropyridazin-4-yl)-2-phenyl-1,2,4,8-tetraazaspiro[4.5]Decan-3-one (CAS 338413-92-6)
- Triclonide (CAS 26849-57-0)
- 2,2'-Bis((diphenylphosphaneyl)methyl)-1,1'-binaphthalene (CAS 128347-41-1)
- 4-Fluoro-7-methyl-2-(pyridin-2-yl)indoline (CAS 595545-06-5)
- tert-butyl (4R)-4-amino-1,2-oxazolidine-2-carboxylate (CAS 2089610-73-9)
- (R)-5-(4-methoxy-3-((tetrahydrofuran-3-yl)oxy)phenyl)-2-methylpyridazin-3(2H)-one (CAS 1093406-15-5)
- 2-((4-Nitrophenyl)amino)phenol (CAS 119707-16-3)
- 2-(1-Cyclopentyl-3-oxopiperazin-2-yl)acetic acid (CAS 1042697-00-6)
- 5'-Amino-4-bromo-[1,1':3',1''-terphenyl]-4',6'-dicarbonitrile (CAS 119452-41-4)
- 2,5-Di([1,1'-biphenyl]-4-yl)oxazole (CAS 2083-09-2)
- 3-(aminomethyl)-4-iodophenol (CAS 943749-95-9)
- Liraglutide Impurity 16 TFA Salt (CAS CATO-C4X-199216)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com