4-[(Dimethylamino)methylene]-2-(4-nitrophenyl)-5-phenyl-2,4-dihydro-3H-pyrazol-3-one CAS 1164515-07-4
| CAS No. | 1164515-07-4 |
| Molecular Formula | C18H16N4O3 |
| Molecular Weight | 336.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-[(Dimethylamino)methylene]-2-(4-nitrophenyl)-5-phenyl-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.
4-[(Dimethylamino)methylene]-2-(4-nitrophenyl)-5-phenyl-2,4-dihydro-3H-pyrazol-3-one (CAS 1164515-07-4) is a high-purity analytical reference standard with the molecular formula C18H16N4O3 and a molecular weight of 336.34 g/mol.
Based on its molecular formula C18H16N4O3, 4-[(Dimethylamino)methylene]-2-(4-nitrophenyl)-5-phenyl-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 336.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C18H16N4O3 |
| Molecular Weight | 336.34 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 4 |
Related Dimethylamino Standards
- 2-(4-(Dimethylamino)styryl)-6-nitroquinazolin-4(1H)-one (CAS 63441-07-6)
- N-(4-((Dimethylamino)methyl)benzyl)-4-(trifluoromethyl)benzamide (CAS 869632-29-1)
- (E)-3-(4-(6-(dimethylamino)-4-(trifluoromethyl)pyridin-2-yl)phenyl)acrylic acid (CAS 1311283-88-1)
- (E)-3-[3-(6-Dimethylamino-4-trifluoromethyl-pyridin-2-yl)-phenyl]-acrylic acid (CAS 1311284-01-1)
- 2-(2-(Dimethylamino)ethyl)-1-oxo-4-phenyl-1,2-dihydroisoquinoline-3-carboxylic acid (CAS 112392-95-7)
- (2E)-3-(Dimethylamino)-2-[(E)-2-(4-ethoxyphenoxy)benzoyl]prop-2-enenitrile (CAS 866152-26-3)
- N1-(2-(Dimethylamino)-2-(4-fluorophenyl)ethyl)-N2-(thiazol-2-yl)oxalamide (CAS 941871-17-6)
- 1-(2-(Dimethylamino)ethyl)-3-(4-(2-(2-(dimethylamino)ethyl)-1-formylhydrazinyl)phenyl)urea (CAS 1024164-18-8)
Recommended Standards
- 3,5-Bis(pyridin-4-ylmethoxy)benzoicacid (CAS 1151548-69-4)
- 3-(3-(Benzo[d][1,3]dioxol-5-yl)-1-phenyl-1H-pyrazol-4-yl)propanoic acid (CAS 1171384-62-5)
- 13-O-Acetylcorianin (CAS 108887-44-1)
- MM 47755 (CAS 117620-87-8)
- 2-((tert-Butoxycarbonyl)amino)-4-(2-((tert-butoxycarbonyl)amino)phenyl)-4-oxobutanoic acid (CAS 1219434-68-0)
- 1,8-Naphthyridin-2(1H)-one (CAS 15936-09-1)
- 5-Bromo-N,3-dimethyl-2-nitroaniline (CAS 1639116-33-8)
- N.N-Dimethyl-p-phenylenediamine sulfate (CAS 6219-73-4)
- 1-[(2,4-Dichlorophenyl)methyl]-6-oxo-N-phenyl-1,6-dihydropyridine-3-carboxamide (CAS 242797-37-1)
- Cefcapene Impurity 20 (CAS CATO-C4X-182420)
- Bis(Bis[(1,2-benzisothiazol-3(2H)-one-κN2) 1,1-dioxidato]bis(1H-imidazole-5-ethanamine-κN1,κN5)copper)bis(saccharinato)copper(II) (CAS 937810-83-8)
- 2-Ethyl-5-hexyl-3-methylfuran (CAS 89932-17-2)
- H-L-Pro-Gly-OEt·xTFA salt (CAS CATO-CPTD788700)
- Eosinophilotactic Peptide (CAS 61756-28-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com