3,4-Bis(trifluoromethyl)-1H-pyrazole CAS 19968-19-5
| CAS No. | 19968-19-5 |
| Molecular Formula | C5H2F6N2 |
| Molecular Weight | 204.07 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.
3,4-Bis(trifluoromethyl)-1H-pyrazole (CAS 19968-19-5) is a high-purity analytical reference standard with the molecular formula C5H2F6N2 and a molecular weight of 204.07 g/mol.
3,4-Bis(trifluoromethyl)-1H-pyrazole (C5H2F6N2) contains a nitrile group, fluorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C5H2F6N2 |
| Molecular Weight | 204.07 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 2-Hexylbenzo[d][1,3,2]dioxaborole (CAS 56554-22-4)
- 3-Bromo-1-propyl-1H-pyrazol-5-amine (CAS 2171314-17-1)
- 2-Ethyl-5-methyl-4-phenyl-1,3,2-dioxaborinane (CAS 74646-03-0)
- 2-(2-Phenylpropyl)-1,3,2-dioxaborinane (CAS 86290-27-9)
- 4,4-dimethylpent-1-yn-3-amine;hydrochloride (CAS 1803604-27-4)
- 55488-85-2 (5alpha,6beta)-17-(Prop-2-en-1-yl)-4,5-epoxymorphinan-3,6,14-triol--hydrogen chloride (1/1) DTXSID50858159 (CAS 55488-85-2)
- 2-Amino-3-iodo-5-(trifluoromethyl)benzonitrile (CAS 1221792-71-7)
- N-(cyclopentylmethyl)-2,2-dimethoxyethan-1-amine (CAS 1248097-77-9)
- Methyl 5,5,5-trifluoro-4-(p-tolylamino)pentanoate (CAS 145176-42-7)
- 1-(Furan-2-ylmethyl)-1H-pyrrole-3-carbaldehyde (CAS 59303-01-4)
- Ethyl 2-(3,3-dimethylpiperidin-4-yl)acetate (CAS 1772585-22-4)
- Bosutinib Impurity 23 (CAS CATO-C4X-184723)
- 2,4-Difluoro-3-(trifluoromethyl)pyridine (CAS 1227564-69-3)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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