1-[1-(2,4-dichlorophenyl)-5-methyl-1h-pyrazol-4-yl]ethan-1-one CAS 668471-64-5
| CAS No. | 668471-64-5 |
| Molecular Formula | C12H10Cl2N2O |
| Molecular Weight | 269.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-[1-(2,4-dichlorophenyl)-5-methyl-1h-pyrazol-4-yl]ethan-1-one (CAS 668471-64-5) is a high-purity analytical reference standard with the molecular formula C12H10Cl2N2O and a molecular weight of 269.13 g/mol.
1-[1-(2,4-dichlorophenyl)-5-methyl-1h-pyrazol-4-yl]ethan-1-one (C12H10Cl2N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C12H10Cl2N2O |
| Molecular Weight | 269.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related dichlorophenyl Standards
- 2-(2,4-Dichlorophenyl)-3a,4,5,6-tetrahydrocyclopenta[c]pyrazol-3(2H)-one (CAS 1304083-48-4)
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- 6-(2,4-Dichlorophenyl)imidazo[2,1-b]thiazole (CAS 120123-67-3)
- 2-[4-(2,4-Dichlorophenyl)-1,3-thiazol-2-yl]acetonitrile (CAS 730951-49-2)
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- 6-(3,4-Dichlorophenyl)imidazo[2,1-b]thiazole (CAS 910443-26-4)
- (2,4-Dichlorophenyl)(4-fluorophenyl)methanone (CAS 65214-59-7)
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Recommended Standards
- 2-(3-Bromobut-3-en-1-yl)phenyl acetate (CAS 890097-76-4)
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- 2,4-Diamino-5-(2,4-dichlorobenzyl)pyrimidine (CAS 65321-42-8)
- (4-((1,1-Dioxidothiomorpholino)methyl)phenyl)boronic acid (CAS 747413-23-6)
- 2-Bromo-4-fluoro-1-methoxy-3-(methoxymethyl)benzene (CAS 2379321-25-0)
- 4-(4-Chloro-3-nitrobenzoyl)-8-propyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326812-66-1)
- 2-Fluoro-N-(4,5,6,7-tetrahydrobenzofuran-4-yl)benzamide (CAS 620941-94-8)
- 4-(2-bromoethyl)-1-methyl-1H-pyrazole hydrobromide (CAS 1311317-78-8)
- Methyl 4-(2,4-Dichlorophenyl)-2,4-dioxobutanoate (CAS 175711-73-6)
- 4,4',4''-Boranetriyltribenzoic acid (CAS CATO-CIM-100117)
- 1-(Azetidin-3-yl)pyrrolidine (CAS 149105-96-4)
- 1-(thietan-3-yl)hydraZine 2HCl (CAS 1374651-59-8)
- 1-((2-Oxo-1,2-dihydropyridin-3-yl)sulfonyl)piperidine-3-carboxylic acid (CAS 1710674-64-8)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
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