1-Benzyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylic Acid CAS 1020236-01-4
| CAS No. | 1020236-01-4 |
| Molecular Formula | C17H13ClN2O2 |
| Molecular Weight | 312.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Benzyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylic Acid (CAS 1020236-01-4), molecular formula C17H13ClN2O2 and molecular weight 312.75 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-Benzyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylic Acid (C17H13ClN2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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.
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.
As a certified reference material (CRM), 1-Benzyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylic Acid 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 | C17H13ClN2O2 |
| Molecular Weight | 312.75 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Benzyl Standards
- N-(2-Chlorophenyl)-5-methyl-1-phenyl-1H-1,2,4-triazole-3-carboxamide (CAS 1000572-01-9)
- 1365963-83-2 N-(4-Chlorophenyl)-2-[4-(2-hydroxyethyl)-3-oxomorpholin-2-yl]acetamide MFCD22056571 (CAS 1365963-83-2)
- 4-((4-Chlorophenyl)(hydroxy)methylene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 146271-26-3)
- 5-(4-Chlorophenyl)-1-(4-methylphenyl)-1H-pyrazole-3-carboxylic acid (CAS 158941-09-4)
- Ethyl 2-(4-chlorophenyl)quinazoline-4-carboxylate (CAS 1956383-25-7)
- (E)-4-(((3-Chlorophenyl)amino)methylene)-2-(p-tolyl)oxazol-5(4H)-one (CAS 380645-27-2)
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Recommended Standards
- Ethyl 6-(chloromethyl)-4-(1-ethyl-1h-pyrazol-4-yl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 1005627-70-2)
- Methyl 1-(4-chloro-3-nitrobenzyl)piperidine-4-carboxylate (CAS 1097811-09-0)
- 5-(4-Chlorophenoxy)-1-methyl-3-phenyl-1H-pyrazole-4-carbaldehyde (CAS 109925-44-2)
- Cobalt(II)iodide (CAS 15238-00-3)
- 3′-Azido-3′-deoxyuridine (CAS 70580-88-0)
- 5-Amino-n-methoxy-2-methylbenzamide (CAS 658085-47-3)
- 2-Methoxy-4-methyl-1-(phenylmethoxy)benzene 4-Benzyloxy-3-methoxy-toluene 78136-55-7 (CAS 78136-55-7)
- Methyl 6-(2,6-dimethylmorpholino)pyridazine-3-carboxylate (CAS 1311670-71-9)
- 3-Methyl-1-(oxan-4-yl)-1h-pyrazol-5-amine (CAS 1247075-24-6)
- 6-Chloro-4-(4-fluoro-2-methylphenyl)-N-methylpyridin-3-amine (CAS 825643-62-7)
- 2-(2-Methyl-1H-indol-1-yl)ethan-1-ol (CAS 947016-30-0)
- 2-(3,5-dioxohexyl)-2,3-dihydro-1H-isoindole-1,3-dione (CAS 1423034-65-4)
- [1,1':4',1'':4'',1'''-Quaterphenyl]-2,2''',4,4'''-tetracarboxylic acid (CAS 1860824-55-0)
- Peptide Impurity (CAS CATO-CPTD788810)
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