3-(4-Fluorophenyl)-1h-pyrazole-4-sulfonyl chloride CAS 1247535-85-8
| CAS No. | 1247535-85-8 |
| Molecular Formula | C9H6ClFN2O2S |
| Molecular Weight | 260.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-(4-Fluorophenyl)-1h-pyrazole-4-sulfonyl chloride (C9H6ClFN2O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 260.67 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 3-(4-Fluorophenyl)-1h-pyrazole-4-sulfonyl chloride (CAS 1247535-85-8), a certified reference material (molecular formula C9H6ClFN2O2S, MW 260.67 g/mol) for analytical method development and quality control.
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.
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 | C9H6ClFN2O2S |
| Molecular Weight | 260.67 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluorophenyl Standards
- 1-(2-fluorophenyl)-1H-pyrazole-4-sulfonyl chloride (CAS 1153042-04-6)
- (2-((4-Fluorophenyl)dimethylsilyl)phenyl)methanol (CAS 853955-70-1)
- 3-(3-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine-6-thiol (CAS 872696-22-5)
- 1-(4-fluorophenyl)-3-(phenylsulfanyl)propan-1-one (CAS 1157611-01-2)
- 2-((4-Fluorophenyl)thio)-4-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidine (CAS 343374-37-8)
- 2-(3-Fluorophenyl)-1-(4-(methylthio)phenyl)ethan-1-one (CAS 301699-27-4)
- 1-(4-Fluorophenyl)-4-methyl-1H-pyrazolo[3,4-d]pyridazine-7-thiol (CAS 1105198-21-7)
- 6-(4-Fluorophenyl)-2-methylimidazo[2,1-b]thiazole-5-carbaldehyde (CAS 139389-29-0)
Recommended Standards
- 4-Chloro-3-(4-formylphenyl)benzoic acid (CAS 1261921-72-5)
- Diethyl 5-chloro-1-methyl-1H-pyrazole-3,4-dicarboxylate (CAS 111493-84-6)
- 5-Chloro-4'-formyl-[1,1'-biphenyl]-2-carboxylic acid (CAS 1261929-46-7)
- 3-Fluoro-4-(1h-pyrazol-1-yl)benzene-1-sulfonyl chloride (CAS 1097726-37-8)
- Benzyl 4-oxo-2-propyl-3,4-dihydropyridine-1(2H)-carboxylate (CAS 145100-54-5)
- 4-(2,4-Dichlorophenyl)-N,N-dimethyl-5-(phenylsulfonyl)pyrimidin-2-amine (CAS 339107-80-1)
- 2,5-Dichloro-3,4'-bipyridine (CAS 1214382-45-2)
- Ketorolac Impurity 73 (CAS CATO-C4X-166973)
- 5-methyl-octahydropentalen-2-one (CAS 860569-26-2)
- Tert-butyl 2-(3-(methoxycarbonyl)-2-methylphenyl)pyrrolidine-1-carboxylate (CAS 914299-22-2)
- 4-(Chloromethyl)-3-nitroisoxazole (CAS 155088-53-2)
- 6-Ethyloctahydropyrrolo[3,4-b]pyridine (CAS 1141669-88-6)
- 1,1'-(Pyridine-2,6-diyl)bis(1H-pyrazole-3-carboxylicacid) (CAS 149558-69-0)
- Galanin (1-13)-Neuropeptide Y (25-36) amide (CAS 147138-51-0)
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