4-[(9-Anthracenylmethylene)amino]-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one CAS 303019-69-4
| CAS No. | 303019-69-4 |
| Molecular Formula | C26H21N3O |
| Molecular Weight | 391.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-[(9-Anthracenylmethylene)amino]-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one (CAS 303019-69-4) is a high-purity analytical reference standard with the molecular formula C26H21N3O and a molecular weight of 391.46 g/mol.
Based on its molecular formula C26H21N3O, 4-[(9-Anthracenylmethylene)amino]-1,2-dihydro-1,5-dimethyl-2-phenyl-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 391.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C26H21N3O |
| Molecular Weight | 391.46 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Recommended Standards
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- 4-(4-Methoxyphenoxy)-2-(4-methylphenyl)-5-(piperidin-1-yl)-2,3-dihydropyridazin-3-one (CAS 478066-77-2)
- 6-(4-Methoxyphenyl)-2-(2-morpholinoethyl)-4-phenylpyridazin-3(2H)-one (CAS 23348-49-4)
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