4-(4-(Dimethylamino)benzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one CAS 25111-96-0
| CAS No. | 25111-96-0 |
| Molecular Formula | C19H19N3O |
| Molecular Weight | 305.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(4-(Dimethylamino)benzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 25111-96-0), molecular formula C19H19N3O and molecular weight 305.37 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H19N3O, 4-(4-(Dimethylamino)benzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-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 305.37 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.
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 | C19H19N3O |
| Molecular Weight | 305.37 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 3 |
Related Dimethylamino Standards
- (E)-4-(4-(dimethylamino)benzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (CAS 132603-49-7)
- Ethyl 6-((dimethylamino)methylene)-1,4,4-trimethyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylate (CAS 802541-49-7)
- Ethyl 4-{[3-(dimethylamino)propyl]amino}-1-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (CAS 685109-22-2)
- (E)-3-(dimethylamino)-1-(4-morpholino-3-nitrophenyl)prop-2-en-1-one (CAS 882747-99-1)
- (E)-3-(dimethylamino)-1-(5-morpholino-2-nitrophenyl)prop-2-en-1-one (CAS 866018-52-2)
- Ethyl 8-(4-(dimethylamino)phenyl)-8-oxooctanoate (CAS 951886-01-4)
- (2-Dimethylamino-ethyl)-(5-trifluoromethyl-pyridin-2-yl)-carbamic acid ethyl ester (CAS 1311280-38-2)
- 3-((Dimethylamino)methyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid (CAS 2096330-03-7)
Recommended Standards
- 4-(1H-Benzimidazol-2-yl)-1-(4-ethylphenyl)pyrrolidin-2-one (CAS 847394-57-4)
- 4-(4-Formyl-phenoxy)-piperidine-1-carboxylic acid tert-butyl ester (CAS 207798-38-7)
- 4-(1-(tert-Butoxycarbonyl)piperidin-3-yl)benzoic acid (CAS 916421-44-8)
- 4-(4-Phenylmethoxyphenyl)-4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridine (CAS 359685-79-3)
- (4-Isopropoxypyridin-2-yl)methanamine hydrochloride (CAS 2490705-12-7)
- 3-Methyl-1-(p-tolylthio)pentan-2-one (CAS 1534991-94-0)
- N-methyl-3-phenyl-6-(trifluoromethyl)-1,2,4-triazin-5-amine (CAS 383148-46-7)
- (R)-2-Ethylpiperazine, 97% (CAS 393781-72-1)
- 2-Propenoic acid, 2-methyl-, polymer with ethenylbenzene, methyl 2-methyl-2-propenoate and 1,2-propanediol mono(2-methyl-2-propenoate) (CAS 9072-80-4)
- Octanal-DNPH (CAS 1726-77-8)
- 2-(3,5-Dibromopyridin-2-yl)-2-methylpropanoic acid (CAS 1866838-50-7)
- tert-Butyl 2-hydroxy-6-azaspiro[3.4]octane-6-carboxylate (CAS 1239319-91-5)
- 5-oxo-1-(pyrrolidin-3-yl)pyrrolidine-3-carboxylic acid hydrochloride (CAS 1461714-31-7)
- Fragment-[7-31]-Liraglutide (CAS CATO-C4X-199239)
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