2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl benzenesulfonate CAS 956741-35-8
| CAS No. | 956741-35-8 |
| Molecular Formula | C22H15ClN2O4S |
| Molecular Weight | 438.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 438.88 g/mol gives 2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl benzenesulfonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl benzenesulfonate (CAS 956741-35-8), a certified reference material (molecular formula C22H15ClN2O4S, MW 438.88 g/mol) for analytical method development and quality control.
Structurally, 2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl benzenesulfonate (C22H15ClN2O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 438.88 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C22H15ClN2O4S |
| Molecular Weight | 438.88 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 Chlorophenyl Standards
- Methyl 3-(2-(2-((4-chlorophenyl)amino)-2-oxoacetyl)-1H-pyrrol-1-yl)benzo[b]thiophene-2-carboxylate (CAS 477872-75-6)
- 2-((4-(4-Chlorophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-1-(3,4-dihydroxyphenyl)ethanone (CAS 575466-45-4)
- {2-[(2-chlorophenyl)sulfanyl]pyridin-3-yl}methyl N-[3-(trifluoromethyl)phenyl]carbamate (CAS 339278-60-3)
- 2-((5-(4-Chlorophenyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)-N-(4-fluorophenyl)acetamide (CAS 332922-52-8)
- (E)-[(2-{[(4-chlorophenyl)methyl]sulfanyl}quinolin-3-yl)methylidene]amino thiophene-2-carboxylate (CAS 478065-91-7)
- 4-((4-Chlorophenyl)thio)-2-phenyl-5-(phenylsulfonyl)pyrimidine (CAS 478067-74-2)
- 4-[4-[[2-(4-Chlorophenyl)-5,5-dimethyl-1-cyclohexenyl]methyl]-1-piperazinyl]benzoic Acid (CAS 1044598-91-5)
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Recommended Standards
- 2'-chloro-6'-fluoro-5-hydroxy-4-(1,2,3,4-tetrahydroisoquinolin-1-yl)-6-(1H-1,2,4-triazol-1-yl)-1,6-dihydro-[1,1'-biphenyl]-3(2H)-one (CAS 1005119-26-5)
- 3-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]sulfanyl}-5-[(E)-2-(phenylamino)ethenyl]-1,2-thiazole-4-carbonitrile (CAS 338412-98-9)
- Hydroxy-Bifenthrin (CAS 146726-17-2)
- (2E)-1-(4-{4-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl}phenyl)-3-(dimethylamino)prop-2-en-1-one (CAS 1164529-81-0)
- {6-[(Diethylamino)carbonyl]-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl}acetic acid (CAS 1172724-61-6)
- N,N-Bis[(4-chlorophenyl)methyl]-1H-1,2,3,4-tetrazol-5-amine (CAS 338777-69-8)
- Isopropyl 2-(4-chlorophenyl)quinoline-4-carboxylate (CAS 355433-91-9)
- [1,1':4',1''-Terphenyl]-2',5'-dicarbaldehyde (CAS 144836-60-2)
- 4-Chloro-N-(6-chloro-4-(trifluoromethyl)-pyridin-2-yl)-N-methylbenzamide (CAS 1311279-81-8)
- 2-[Difluoro-(3,4,5-trifluorophenoxy)methyl]-1,3-difluoro-5-(4-propylphenyl)benzene (CAS 303186-20-1)
- 2-(4-Chlorophenyl)thiazolidine-4-carboxylic acid (CAS 34491-29-7)
- 1-(4-Bromo-3-methylphenylsulfonyl)pyrrolidine (CAS 852026-79-0)
- 1,3-Bis((R)-1-(naphthalen-1-yl)ethyl)-1,3,2-diazaphospholidine 2-oxide (CAS 1449218-81-8)
- (Ser(PO?H?)3??·???)-Tau Peptide (379-408) trifluoroacetate salt (CAS 2022956-60-9)
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