3-Phenyl-4-({[4-(trifluoromethoxy)phenyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one CAS 338394-42-6
| CAS No. | 338394-42-6 |
| Molecular Formula | C17H12F3N3O2 |
| Molecular Weight | 347.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 347.29 g/mol gives 3-Phenyl-4-({[4-(trifluoromethoxy)phenyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Phenyl-4-({[4-(trifluoromethoxy)phenyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one (CAS 338394-42-6), molecular formula C17H12F3N3O2 and molecular weight 347.29 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Phenyl-4-({[4-(trifluoromethoxy)phenyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one (C17H12F3N3O2) 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 the protonation state of its nitrogen-containing groups, 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Phenyl-4-({[4-(trifluoromethoxy)phenyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-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 | C17H12F3N3O2 |
| Molecular Weight | 347.29 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, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Phenyl Standards
- 6-[4-(Trifluoromethoxy)phenyl]-3-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine (CAS 1262618-39-2)
- 2',4-Bis(trifluoromethoxy)-[1,1'-biphenyl]-3-carbonitrile (CAS 1261588-86-6)
- Ethyl 2-(2-((4-(trifluoromethoxy)phenyl)amino)thiazol-5-yl)acetate (CAS 1092959-60-8)
- {5-Methyl-1-[4-(trifluoromethoxy)phenyl]-1H-1,2,3-triazol-4-yl}(4-pyridinyl)methanone (CAS 477847-96-4)
- 4-(1-(4-(Trifluoromethoxy)phenyl)-1H-pyrazol-3-yl)benzoic acid (CAS 885015-52-1)
- N-(3-(Trifluoromethoxy)benzyl)-[3,4'-bipyridin]-5-amine (CAS 821784-76-3)
- 2-(1-Phenyl-3-(trifluoromethoxy)propan-2-yl)isoindoline-1,3-dione (CAS 1408279-86-6)
- 1-(4-(Trifluoromethoxy)phenyl)-N-(2,2,4-trimethyl-2,3-dihydrobenzofuran-7-yl)methanimine (CAS 866150-43-8)
Recommended Standards
- 2-Benzyl-4-hydroxy-8-(trifluoromethyl)quinoline-3-carboxylic acid (CAS 64322-02-7)
- 4-{[(4-phenoxyphenyl)amino]methylidene}-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one (CAS 477850-97-8)
- 2-((Benzo[b]selenophen-2-ylthio)methyl)benzoic acid (CAS 62688-17-9)
- 4-Hydroxy-N-(pyridin-2-ylmethyl)-8-(trifluoromethyl)quinoline-3-carboxamide (CAS 946204-26-8)
- 5-(Benzyloxy)-2-methylbenzofuran-3-carboxylic acid (CAS 5010-53-7)
- 3-(2-Cyanoethyl)-1-methyl-1H-imidazol-3-ium iodide (CAS 154470-33-4)
- 1-Phenyl-1h-1,2,3-triazol-4-ol (CAS 90004-10-7)
- Pranoprofen Impurity 11 (CAS CATO-C4X-181111)
- n-(4-Bromo-2-fluorophenyl)-6-methylnicotinamide (CAS 1016706-44-7)
- 3-(Phenylsulfonyl)-6-oxa-3-azabicyclo[3.1.0]hexane (CAS 955158-69-7)
- N,3-dimethylbenzamide (CAS 74786-81-5)
- 2,4-Dibromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazole (CAS 891270-29-4)
- n-(3,5-Dichlorophenyl)-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxamide (CAS 860785-83-7)
- Anorexigenic Peptide (CAS 69275-10-1)
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