2-(1-(2,5-Dichlorophenyl)-1H-pyrazole-4-carbonyl)phenyl (3-chlorophenyl)methanesulfonate CAS 956910-62-6
| CAS No. | 956910-62-6 |
| Molecular Formula | C23H15Cl3N2O4S |
| Molecular Weight | 521.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
2-(1-(2,5-Dichlorophenyl)-1H-pyrazole-4-carbonyl)phenyl (3-chlorophenyl)methanesulfonate (CAS 956910-62-6), molecular formula C23H15Cl3N2O4S and molecular weight 521.80 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-(1-(2,5-Dichlorophenyl)-1H-pyrazole-4-carbonyl)phenyl (3-chlorophenyl)methanesulfonate (C23H15Cl3N2O4S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2-(1-(2,5-Dichlorophenyl)-1H-pyrazole-4-carbonyl)phenyl (3-chlorophenyl)methanesulfonate 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 | C23H15Cl3N2O4S |
| Molecular Weight | 521.80 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dichlorophenyl Standards
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Recommended Standards
- (5E)-1-(2-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino}ethyl)-5-({[3-(trifluoromethyl)phenyl]amino}methylidene)-1,3-diazinane-2,4,6-trione (CAS 306978-02-9)
- 4-Bromo-5-chloro-N-(2,4-dimethoxybenzyl)-2-fluoro-N-(thiazol-2-yl)benzenesulfonamide (CAS 2342604-44-6)
- 7-(4-Bromophenyl)-2-chloro-6-(4-methoxyphenyl)-7,12-dihydro-6H-chromeno[4,3-d][1,2,4]triazolo[1,5-a]pyrimidine (CAS 303094-16-8)
- 6(R)-{2-[8(S)-2-Methyl-d3-butyryloxy-2(S),6(R)-dimethyl-1,2,6,7,8,8d(R)-hexahydro-1(S)-naphthyl]ethyl}-4(R)-tert-butyldimethylsilyloxy-3,4,5,6-tetrahydro-2H-pyran-2-one (CAS 1217723-49-3)
- 3-Iodo-4-(2-methoxyacetamido)benzoic acid (CAS 1131614-49-7)
- 4-[4-Chloro-2-(trifluoromethyl)phenyl]thiomorpholine-3,5-dione (CAS 338421-37-7)
- Ethyl 3-(1H-indol-2-yl)-3-oxopropanoate (CAS 887411-77-0)
- (1-(tert-Butoxycarbonyl)-7-chloro-6-cyano-1H-indol-3-yl)boronic acid (CAS 2750639-89-3)
- N-Bromoacetamide (CAS 79-15-2)
- 2-Acetyl-3-methylbutanenitrile (CAS 53094-13-6)
- N-(5-Amino-2-fluorophenyl)-2-(4-ethylphenoxy)-propanamide (CAS 1020053-85-3)
- 1,4,5,8-Tetraamino-2,6-bis(3-propylphenoxy)anthracene-9,10-dione (CAS 88600-13-9)
- 4,5-Diphenyl-1,3-dioxol-2-one (CAS 21240-34-6)
- Semaglutide impurity 63 (CAS CATO-C4X-222663)
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