5-Fluoro-3-pentafluoroethyl-1-phenyl-4-trifluoromethyl-1H-pyrazole CAS 121807-33-8
| CAS No. | 121807-33-8 |
| Molecular Formula | C12H5F9N2 |
| Molecular Weight | 348.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Fluoro-3-pentafluoroethyl-1-phenyl-4-trifluoromethyl-1H-pyrazole (C12H5F9N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-Fluoro-3-pentafluoroethyl-1-phenyl-4-trifluoromethyl-1H-pyrazole (CAS 121807-33-8) is a high-purity analytical reference standard with the molecular formula C12H5F9N2 and a molecular weight of 348.17 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.
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 | C12H5F9N2 |
| Molecular Weight | 348.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluoro Standards
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Recommended Standards
- 1-(5-Bromo-2-fluorobenzyl)-1H-indole-2-carboxylic acid (CAS 1036606-78-6)
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- Tert-butyl 3-bromo-4-hydroxy-4-(trifluoromethyl)piperidine-1-carboxylate (CAS 2101206-52-2)
- 2-[(2,3-Dichlorophenyl)sulfanyl]-5-(trifluoromethyl)benzonitrile (CAS 477866-79-8)
- Methyl 5-(4-chlorophenyl)-1H-pyrrole-2-carboxylate (CAS 28970-57-2)
- 3,5-Dimethyl-1-(pentan-3-yl)-1h-pyrazol-4-amine (CAS 1248935-11-6)
- 1-Phenyl-3-(phenylamino)-1H-pyrazol-5(4H)-one (CAS 7186-66-5)
- Chloroformic Acid Impurity 1 (CAS 628-50-2)
- ((2,4-Dioxo-2,3,4,5-tetrahydro-1h-benzo[b][1,4]diazepin-7-yl)sulfonyl)proline (CAS 1044637-60-6)
- Methyl 1-oxa-8-azaspiro[4.5]decane-2-carboxylate hydrochloride (CAS 1392804-61-3)
- Tafluprost Impurity 5 (CAS CATO-C4X-21635)
- (8S,9AR)-8-hydroxyhexahydro-1H-pyrido[1,2-a]pyrazine-1,4(6H)-dione (CAS 262289-72-5)
- Benzyl glyoxylate (CAS 52709-42-9)
- (D-Trp32)-Neuropeptide Y (porcine) trifluoroacetate salt (CAS 153549-78-1)
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