4-(4-Fluorophenyl)-2-(4-(trifluoromethoxy)phenyl)phthalazin-1(2H)-one CAS 161716-19-4
| CAS No. | 161716-19-4 |
| Molecular Formula | C21H12F4N2O2 |
| Molecular Weight | 400.33 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.
CATO supplies 4-(4-Fluorophenyl)-2-(4-(trifluoromethoxy)phenyl)phthalazin-1(2H)-one (CAS 161716-19-4), a certified reference material (molecular formula C21H12F4N2O2, MW 400.33 g/mol) for analytical method development and quality control.
The molecular framework of 4-(4-Fluorophenyl)-2-(4-(trifluoromethoxy)phenyl)phthalazin-1(2H)-one (C21H12F4N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 4-(4-Fluorophenyl)-2-(4-(trifluoromethoxy)phenyl)phthalazin-1(2H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C21H12F4N2O2 |
| Molecular Weight | 400.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluorophenyl Standards
- 3-[1-(2-Fluorophenyl)-1H-pyrazol-3-yl]-1-[3-(trifluoromethyl)phenyl]-1,4-dihydropyridazin-4-one (CAS 318498-08-7)
- 5-((4-Fluorophenyl)sulfonyl)-7-(trifluoromethyl)-1,2,3,3a,4,5-hexahydropyrrolo[1,2-a]quinoxaline (CAS 860786-78-3)
- 2-(2-(4-(2-Fluorophenyl)piperazin-1-yl)ethyl)-7-nitro-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 860611-71-8)
- N-(4-Fluorophenyl)-4-(morpholinosulfonyl)benzenesulfonamide (CAS 748028-11-7)
- 4-[(5E)-5-[(4-Fluorophenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]-4-azatricyclo[5.2.1.0^{2,6}]dec-8-ene-3,5-dione (CAS 477766-87-3)
- 4-[(4-Fluorophenyl)methyl]-3-[1-(5-methylthiophene-2-carbonyl)piperidin-4-yl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775311-16-4)
- 3-((4-(2-Fluorophenyl)piperazin-1-yl)methyl)-6-methyl-2-phenylimidazo[1,2-a]pyridine (CAS 861212-40-0)
- 2-{[(3-fluorophenyl)methyl]sulfanyl}-4,5-diphenyl-1-(prop-2-en-1-yl)-1H-imidazole (CAS 339277-95-1)
Recommended Standards
- N-(piperidin-2-yl)-2,5-bis(2,2,2-trifluoroethoxy)benzamide (CAS 744989-04-6)
- 5-(Trifluoromethyl)-3-{4-[3-(trifluoromethyl)phenyl]piperazin-1-yl}pyridine-2-carbonitrile (CAS 338791-63-2)
- (2Z)-3-{[3,5-bis(trifluoromethyl)phenyl]amino}-2-(2-methylpropane-2-sulfonyl)prop-2-enenitrile (CAS 1025311-62-9)
- 3-Amino-N-(2,5-dichlorophenyl)-4-(piperidin-1-yl)benzene-1-sulfonamide (CAS 327103-18-4)
- 2-((1H-1,2,4-triazol-5-yl)thio)-2-(4-chlorophenyl)acetonitrile (CAS 477865-26-2)
- 2-((6-(Pyridin-4-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)acetamide (CAS 894059-58-6)
- Butyl[(2,4,5-trimethoxyphenyl)methyl]amine hydrochloride (CAS 1158411-36-9)
- β-Alanine (CAS 107-95-9)
- 5,6-dimethoxybenzothiophene-2-carboxylic acid (CAS 23046-03-9)
- n'-Hydroxy-2-(isobutylthio)acetimidamide (CAS 1087785-18-9)
- 4-[(4-Cyclopentyl-1-piperazinyl)carbonyl]benzoic acid (CAS 896514-65-1)
- Ethyl (3R,4S)-3,4-difluorocyclopentane-1-carboxylate (CAS 2448339-47-5)
- N-(2-bromo-4-methylphenyl)isonicotinamide (CAS 310452-36-9)
- Tirzepatide Impurity 16 (CAS CATO-C4X-324016)
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