3-(4-Fluorophenyl)-5-(3-(trifluoromethyl)phenyl)pyrazolo[1,5-a]pyrimidine CAS 866019-48-9
| CAS No. | 866019-48-9 |
| Molecular Formula | C19H11F4N3 |
| Molecular Weight | 357.30 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-Fluorophenyl)-5-(3-(trifluoromethyl)phenyl)pyrazolo[1,5-a]pyrimidine (CAS 866019-48-9), molecular formula C19H11F4N3 and molecular weight 357.30 g/mol, is a CATO reference standard with documented purity and traceability.
3-(4-Fluorophenyl)-5-(3-(trifluoromethyl)phenyl)pyrazolo[1,5-a]pyrimidine (C19H11F4N3) 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).
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 | C19H11F4N3 |
| Molecular Weight | 357.30 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 |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Fluorophenyl Standards
- Ethyl 5-(4-fluorophenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-2-carboxylate (CAS 863186-47-4)
- 1-(4-(2-Fluorophenyl)thiazol-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 955975-49-2)
- 1-(4-(4-Fluorophenyl)thiazol-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 385416-16-0)
- 1-[4-(3-Fluorophenyl)-1,3-thiazol-2-yl]-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 385416-14-8)
- N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)pentanamide (CAS 1040661-95-7)
- Methyl 2-((2-((4-fluorophenyl)carbamoyl)thiophen-3-yl)sulfonyl)acetate (CAS 251097-21-9)
- 2-(4-(4-Fluorophenyl)piperazin-1-yl)-N-(2-methoxy-5-methylphenyl)acetamide (CAS 329079-98-3)
- 2-(4-(4-Fluorophenyl)piperazin-1-yl)-N-(4-methoxybenzyl)acetamide (CAS 486457-24-3)
Recommended Standards
- 1-(3-Fluoro-4-methoxybenzyl)-3-(2-methyl-6-(trifluoromethyl)pyridin-3-yl)urea (CAS 1980064-17-2)
- 1-Cyclopentyl-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine (CAS 1015242-01-9)
- 1-Cyclopropyl-6,8-difluoro-7-(4-hydroxyphenyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 136440-70-5)
- Capivasertib Impurity 42 (CAS CATO-C4X-331242)
- Di-tert-butyl (3-bromo-2,4-difluorophenyl)iminodicarbonate (CAS 2754409-94-2)
- 2-(Piperidin-4-yl)-6-(pyridin-3-yl)-[1,2,4]triazolo[1,5-a]pyridine (CAS 1422138-53-1)
- N-Boc-D-Ser(Me)-ol (CAS 721927-59-9)
- 1-[4-(6-hydroxyhex-1-ynyl)phenyl]hexahydropyrimidine-2,4-dione (CAS 2904664-77-1)
- Methyl 2-(difluoromethylene)tetrahydro-1H-pyrrolizine-7a(5H)-carboxylate (CAS 2856019-40-2)
- ditert-butyl (2S)-2-[(7-oxo-3-oxa-9-azabicyclo[3.3.1]nonan-9-yl)methyl]piperazine-1,4-dicarboxylate (CAS 1361219-31-9)
- 5-Iodooroticacid (CAS 17687-22-8)
- 2-Chloro-N-(Ethoxymethyl)-N-[2-Methyl-6-(Trifluoromethyl)Phenyl]Acetamide (CAS 78194-29-3)
- Methyl 4-methyl-6-(piperazin-1-yl)nicotinate (CAS 1355227-09-6)
- Des-Trp25-Tirzepatide (CAS CATO-CPTD788948)
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