4-((1,3-Diphenyl-1H-pyrazol-4-yl)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one CAS 370096-57-4
| CAS No. | 370096-57-4 |
| Molecular Formula | C20H16N4O |
| Molecular Weight | 328.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-((1,3-Diphenyl-1H-pyrazol-4-yl)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-((1,3-Diphenyl-1H-pyrazol-4-yl)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one (CAS 370096-57-4), a certified reference material (molecular formula C20H16N4O, MW 328.37 g/mol) for analytical method development and quality control.
Structurally, 4-((1,3-Diphenyl-1H-pyrazol-4-yl)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one (C20H16N4O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 328.37 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 4-((1,3-Diphenyl-1H-pyrazol-4-yl)methylene)-5-methyl-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 | C20H16N4O |
| Molecular Weight | 328.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Related Diphenyl Standards
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Recommended Standards
- 3-[1-(4-Methylphenyl)-1H-pyrazol-3-yl]-1-phenyl-1,4-dihydropyridazin-4-one (CAS 318497-95-9)
- 4-(4-(3,4-Dimethoxybenzyl)-5-methyl-4H-1,2,4-triazol-3-yl)-1-methyl-1H-pyrazol-5-amine (CAS 956371-02-1)
- 2-((S)-1-((S)-2-Amino-5-guanidinopentanoyl)pyrrolidine-2-carboxamido)acetic acid (CAS 96817-14-0)
- 4-[2-(2-Pyridyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl]quinolin-7-ol (CAS 476474-11-0)
- 4-Bromo-1-fluoro-2-(perfluoroethyl)benzene (CAS 1447671-80-8)
- Niobium(V) iodide (CAS 13779-92-5)
- 6-Fluoro-4-hydroxypicolinic acid (CAS 1393552-06-1)
- Cadisegliatin (CAS 859525-02-3)
- (2E)-3-[4-(Benzyloxy)phenyl]-1-{[1,1'-biphenyl]-4-yl}prop-2-en-1-one (CAS 805271-97-0)
- Diethyl thiophen-2-ylphosphonate (CAS 13640-95-4)
- 2-(2,5-Diazabicyclo[2.2.2]octan-2-yl)-2-methylpropan-1-ol (CAS 1403767-01-0)
- 2-Ethoxy-1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one (CAS 1179729-08-8)
- 1-[3-(4-chlorophenyl)-1,2,4-oxadiazol-5-yl]ethan-1-one (CAS 1339787-73-3)
- Insulin Degludec Impurity 20 (CAS CATO-C4X-215720)
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