4-(((2,4-Dichlorobenzyl)imino)methyl)-5-ethoxy-2-phenyl-1,2-dihydro-3H-pyrazol-3-one CAS 338751-02-3
| CAS No. | 338751-02-3 |
| Molecular Formula | C19H17Cl2N3O2 |
| Molecular Weight | 390.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(((2,4-Dichlorobenzyl)imino)methyl)-5-ethoxy-2-phenyl-1,2-dihydro-3H-pyrazol-3-one.
4-(((2,4-Dichlorobenzyl)imino)methyl)-5-ethoxy-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 338751-02-3) is a high-purity analytical reference standard with the molecular formula C19H17Cl2N3O2 and a molecular weight of 390.26 g/mol.
4-(((2,4-Dichlorobenzyl)imino)methyl)-5-ethoxy-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (C19H17Cl2N3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C19H17Cl2N3O2 |
| Molecular Weight | 390.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichlorobenzyl Standards
- 2-((2,4-Dichlorobenzyl)amino)-1-(4-fluorophenyl)-1-phenylethan-1-ol (CAS 338771-51-0)
- 2-((3,4-Dichlorobenzyl)amino)-1-(4-fluorophenyl)-1-phenylethan-1-ol (CAS 338771-53-2)
- trans-4-((1-(3,4-Dichlorobenzyl)-1H-benzo[d]imidazol-2-yl)amino)cyclohexan-1-ol (CAS 1420978-81-9)
- 2-(3-((2,4-Dichlorobenzyl)oxy)thiophene-2-carbonyl)-N-methylhydrazine-1-carbothioamide (CAS 343375-86-0)
- (E)-3-((3,4-dichlorobenzyl)thio)-4-ethyl-5-styryl-4H-1,2,4-triazole (CAS 478065-61-1)
- 2-(((4-((2,4-Dichlorobenzyl)thio)phenyl)amino)methyl)phenol (CAS 763125-55-9)
- 1-(3,4-Dichlorobenzyl)-N-(4-fluorophenyl)-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 338782-63-1)
- 1-(2,6-Dichlorobenzyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazole-4-carbaldehyde (CAS 1015939-98-6)
Recommended Standards
- 3-Iodobenzyl octyl carbonate (CAS 60075-90-3)
- 4-((3-Bromo-4-methoxybenzylidene)amino)-3-(pyridin-2-yl)-1H-1,2,4-triazole-5(4H)-thione (CAS 613248-50-3)
- 2-[5-(2,4-Dichlorophenyl)-1H-pyrazol-1-yl]-4-(4-fluorophenyl)-1,3-thiazole (CAS 956206-48-7)
- 4-((5-Bromo-2-methoxybenzylidene)amino)-3-(pyridin-2-yl)-1H-1,2,4-triazole-5(4H)-thione (CAS 497823-53-7)
- 1-Methyl-N-(tetrahydro-2H-thiopyran-3-yl)piperidin-4-amine (CAS 1343785-32-9)
- (5-Hydroxynicotinoyl)methionine (CAS 1397007-75-8)
- Benzyl 8-bromo-6-chloro-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2680664-07-5)
- 4-Fluoro-3,5-dimethylbenzamide (CAS 886501-71-9)
- 6-Butyl-2,3-dimethylnaphthalene (CAS 1533448-53-1)
- 2-[(4-fluorophenyl)methyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 243145-83-7)
- 2-(5-Isopropyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-yl)ethan-1-amine (CAS 1016684-85-7)
- 2-(Diphenylphosphino)-N-[(8α,9S)-6'-methoxycinchonan-9-yl]benzamide (CAS 1630973-03-3)
- Phenylacetylene (CAS 536-74-3)
- Des-Ala21-Tirzepatide (CAS CATO-CPTD788952)
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