1-(3-Chlorobenzenesulfonyl)-5-[(E)-1-(4-chlorophenoxy)-2-phenylethenyl]-1H-pyrazole CAS 400087-39-0
| CAS No. | 400087-39-0 |
| Molecular Formula | C23H16Cl2N2O3S |
| Molecular Weight | 471.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(3-Chlorobenzenesulfonyl)-5-[(E)-1-(4-chlorophenoxy)-2-phenylethenyl]-1H-pyrazole (CAS 400087-39-0), molecular formula C23H16Cl2N2O3S and molecular weight 471.36 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C23H16Cl2N2O3S, 1-(3-Chlorobenzenesulfonyl)-5-[(E)-1-(4-chlorophenoxy)-2-phenylethenyl]-1H-pyrazole contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 471.36 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 1-(3-Chlorobenzenesulfonyl)-5-[(E)-1-(4-chlorophenoxy)-2-phenylethenyl]-1H-pyrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C23H16Cl2N2O3S |
| Molecular Weight | 471.36 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 Chlorobenzenesulfonyl Standards
- 1-(4-Chlorobenzenesulfonyl)-4-{5-[3-(trifluoromethyl)phenyl]-1H-pyrazol-3-yl}piperidine (CAS 1025724-67-7)
- 1-(4-Chlorobenzenesulfonyl)-4-{[4-(4-fluorophenyl)piperazin-1-yl]methyl}piperidin-4-ol (CAS 478041-65-5)
- 4-{3-[(4-chlorobenzenesulfonyl)methyl]-4-nitrophenyl}-2-(pyridin-3-yl)pyrimidine (CAS 303145-52-0)
- 1-(4-Chlorobenzenesulfonyl)-N'-[(1E)-(3,4-dimethoxyphenyl)methylidene]piperidine-4-carbohydrazide (CAS 393161-83-6)
- 4-{3-[(4-chlorobenzenesulfonyl)methyl]-4-nitrophenyl}-2-phenylpyrimidine (CAS 303145-51-9)
- (2Z)-2-(4-Chlorobenzenesulfonyl)-3-(4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)prop-2-enenitrile (CAS 1025270-09-0)
- 3-(4-Chlorobenzenesulfonyl)-N-[(3-methoxyphenyl)methyl]-[1,2,3]triazolo[1,5-a]quinazolin-5-amine (CAS 895646-96-5)
- 4-{3-[(4-chlorobenzenesulfonyl)methyl]-4-nitrophenyl}-2-(4-methylphenyl)pyrimidine (CAS 303145-54-2)
Recommended Standards
- Lifitegrast Impurity N12 (CAS 851785-70-1)
- N-(3,4-Dichlorophenyl)-2-((5-(4-hydroxyphenyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 332881-74-0)
- Gemigliptin impurity 1 (CAS CATO-C4X-33061)
- (E)-[(2-Chloro-6-fluorophenyl)methoxy][(2-{[(4-chlorophenyl)methyl]sulfanyl}quinolin-3-yl)methylidene]amine (CAS 478079-39-9)
- 4-(2-Chlorobenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326810-13-2)
- 4-amino-5-iodo-naphthalen-2-ol (CAS 2387597-11-5)
- 1-(5-Bromo-2-nitrophenyl)-N,N-dimethylmethanamine (CAS 1400644-49-6)
- 2-Isopropyl-5-(phenylthio)pyrimidine-4-carboxylic acid (CAS 1284425-70-2)
- Bismuth sulfate (CAS 7787-68-0)
- Roflumilast Impurity 44 (CAS CATO-C4X-108444)
- 4,8-Dichloro-6-fluoroquinoline (CAS 1019016-95-5)
- N-crotonyl-(4R,5S)-4-methyl5-phenyl-2-oxazolidinone (CAS 90719-31-6)
- 3-((Butylimino)methyl)-7-methylquinolin-2(1H)-one (CAS 586986-37-0)
- TAT 14 Peptide (Nrf2 Activator III) (CAS 1362661-34-4)
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