2-(2-Chloro-phenyl)-5-trifluoromethyl-2H-pyrazole-3-carbonitrile CAS 1858242-23-5
| CAS No. | 1858242-23-5 |
| Molecular Formula | C11H5ClF3N3 |
| Molecular Weight | 271.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(2-Chloro-phenyl)-5-trifluoromethyl-2H-pyrazole-3-carbonitrile (CAS 1858242-23-5), molecular formula C11H5ClF3N3 and molecular weight 271.63 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H5ClF3N3, 2-(2-Chloro-phenyl)-5-trifluoromethyl-2H-pyrazole-3-carbonitrile contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 271.63 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).
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 | C11H5ClF3N3 |
| Molecular Weight | 271.63 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
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- 4-Methoxy-4'-(pyrrolidin-1-ylsulfonyl)-[1,1'-biphenyl]-3-ol (CAS 1261951-21-6)
- 5-([1,1'-Biphenyl]-4-yloxy)isobenzofuran-1,3-dione (CAS 122590-11-8)
- Lurasidone Impurity 55 (CAS CATO-C4X-102855)
- 1-(3-Thiomorpholinopyrazin-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 1708428-45-8)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-1,2'-bipyridine (CAS 2304631-50-1)
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