5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-3-carboxylic Acid CAS 162758-35-2
| CAS No. | 162758-35-2 |
| Molecular Formula | C17H11Cl3N2O2 |
| Molecular Weight | 381.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C17H11Cl3N2O2, 5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-3-carboxylic Acid contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 381.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-3-carboxylic Acid (CAS 162758-35-2) is a high-purity analytical reference standard with the molecular formula C17H11Cl3N2O2 and a molecular weight of 381.64 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-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 | C17H11Cl3N2O2 |
| Molecular Weight | 381.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 2003 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- (6-(4-((4-Chlorophenyl)sulfonyl)piperazin-1-yl)pyridin-3-yl)boronic acid (CAS 1003043-43-3)
- Methyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 158941-06-1)
- Methyl 5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 158941-38-9)
- 5-(4-Chlorophenyl)-1-(2,4-dichlorobenzyl)-1H-pyrazole-3-carboxylic acid (CAS 192701-96-5)
- 1-(4-Chlorophenyl)-N-(2,4-dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 321431-02-1)
- 1-(4-Chlorophenyl)-N-(3,5-dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 321431-31-6)
- Methyl 1-(3-chlorophenyl)-5-(3,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 318256-19-8)
- Methyl 5-(2-chlorophenyl)-1-(3,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 318256-25-6)
Recommended Standards
- N-(2-Hydroxyethyl)erucamide (CAS 18190-74-4)
- N-Dodecanoyldodecanamide (CAS 112605-93-3)
- (S)-2-[Bis(3,5-dimethylphenyl)[(trimethylsilyl)oxy]methyl]pyrrolidine (CAS 848821-60-3)
- (3-(4-Bromophenyl)-1-(3-chloro-4-fluorophenyl)-1H-pyrazol-4-yl)methanol (CAS 618383-29-2)
- 1-(3-Methylpyridin-2-yl)piperazine hydrochloride (CAS 2007909-71-7)
- 4-Methylbenzenesulfonic Acid 2-[(4-Hydroxyphenyl)phenylmethylene]hydrazide (CAS 147169-63-9)
- 2-(5-Bromo-2-(trifluoromethyl)pyridin-4-yl)propan-2-ol (CAS 2328100-74-7)
- 5-Chloro-2-methyl-3-nitrobenzaldehyde (CAS 1613329-99-9)
- N-(4-Chloro-3-(trifluoromethyl)phenyl)-2-propoxybenzamide (CAS 709676-56-2)
- 7-Fluoro-2-methylisoindolin-1-one (CAS 1379239-03-8)
- (E)-{2-[(4-bromophenyl)sulfanyl]-1-(4-methoxyphenyl)ethylidene}(methoxy)amine (CAS 338400-78-5)
- 1-Hydroxy-1,2-dihydro Eprosartan-d3 Dimethyl Ester (CAS 1189431-71-7)
- N,N-Bis(2-hydroxyethyl)-2,5-dimethoxy-4-methylbenzenesulfonamide (CAS 942703-17-5)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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