5-Methyl-2-phenyl-4-((phenylamino)methylene)-2,4-dihydro-3H-pyrazol-3-one CAS 4173-73-3
| CAS No. | 4173-73-3 |
| Molecular Formula | C17H15N3O |
| Molecular Weight | 277.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methyl-2-phenyl-4-((phenylamino)methylene)-2,4-dihydro-3H-pyrazol-3-one (CAS 4173-73-3), molecular formula C17H15N3O and molecular weight 277.32 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C17H15N3O, 5-Methyl-2-phenyl-4-((phenylamino)methylene)-2,4-dihydro-3H-pyrazol-3-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 277.32 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 5-Methyl-2-phenyl-4-((phenylamino)methylene)-2,4-dihydro-3H-pyrazol-3-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H15N3O |
| Molecular Weight | 277.32 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
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Why CATO?
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