3-Methyl-1-(2-phenoxyethyl)-4-phenyl-1H-pyrazol-5(4H)-one CAS 55294-60-5
| CAS No. | 55294-60-5 |
| Molecular Formula | C18H18N2O2 |
| Molecular Weight | 294.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 3-Methyl-1-(2-phenoxyethyl)-4-phenyl-1H-pyrazol-5(4H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 294.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
3-Methyl-1-(2-phenoxyethyl)-4-phenyl-1H-pyrazol-5(4H)-one (CAS 55294-60-5), molecular formula C18H18N2O2 and molecular weight 294.35 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C18H18N2O2 |
| Molecular Weight | 294.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 3-Benzyl-1-(2-phenoxyethyl)-1H-pyrazol-5(4H)-one (CAS 62270-65-9)
- 5-Methyl-2-(2-phenoxyethyl)-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 861206-16-8)
- 2-Phenoxyethyl 4-methylbenzenesulfonate (CAS 43224-81-3)
- (5-(1-Phenoxyethyl)-1H-pyrazol-1-yl)(phenyl)methanone (CAS 324008-77-7)
- 3-((2-Phenoxyethyl)thio)-4-phenyl-4H-1,2,4-triazole (CAS 870756-46-0)
- 1-[(2-Phenoxyethyl)sulfanyl]-3-(trifluoromethyl)benzene (CAS 338792-27-1)
- 2-((2-Phenoxyethyl)thio)-5-phenyl-1,3,4-oxadiazole (CAS 477846-67-6)
- 5-methyl-1-(2-phenoxyethyl)-1H-1,3-benzodiazole-2-thiol (CAS 1306986-31-1)
Recommended Standards
- 3-Ethoxy-2-methyl-6-(4-phenyl-1H-pyrazol-3-yl)phenol (CAS 385401-38-7)
- 4-(2-Hydroxy-3-(4-methylpiperazin-1-yl)propoxy)benzoic acid (CAS 797814-47-2)
- 3-Butoxy-2-phenylquinazolin-4(3H)-one (CAS 72805-21-1)
- 4-(3-((Dimethylamino)methyl)phenyl)-5-hydroxyisoquinolin-1(2H)-one (CAS 651029-60-6)
- 3-Methyl-5-(3-oxobutyl)-1-benzofuran-2-carboxylic acid (CAS 728898-85-9)
- 2-(p-Tolyl)benzoxazole (CAS 835-71-2)
- 5-Bromo-4-ethoxy-2-(4-fluorophenyl)-2,3-dihydropyridazin-3-one (CAS 478080-62-5)
- Biphenylene-2-carboxylic acid (CAS 93103-69-6)
- 3-methylpiperidin-3-ol hydrochloride (CAS 955028-98-5)
- Dihydrochelerythrine (CAS 6880-91-7)
- Sodium Aurothiomalate - API Standards (CAS 12244-57-4)
- 4-[(1E)-2-(2-Amino-4-hydroxy-5-methylphenyl)diazenyl]-N-2-pyridinylbenzenesulfonamide (CAS 1395084-25-9)
- 5-(aminomethyl)oxolane-2-carboxamide (CAS 1384782-64-2)
- (Leu31,Pro3?)-Neuropeptide Y (porcine) trifluoroacetate salt (CAS 125580-28-1)
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