1,3-Diethyl 2-({[1-(4-chlorophenyl)-3-methyl-1H-pyrazol-5-yl]amino}methylidene)propanedioate CAS 956574-60-0
| CAS No. | 956574-60-0 |
| Molecular Formula | C18H20ClN3O4 |
| Molecular Weight | 377.82 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 377.82 g/mol gives 1,3-Diethyl 2-({[1-(4-chlorophenyl)-3-methyl-1H-pyrazol-5-yl]amino}methylidene)propanedioate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1,3-Diethyl 2-({[1-(4-chlorophenyl)-3-methyl-1H-pyrazol-5-yl]amino}methylidene)propanedioate (CAS 956574-60-0), a certified reference material (molecular formula C18H20ClN3O4, MW 377.82 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1,3-Diethyl 2-({[1-(4-chlorophenyl)-3-methyl-1H-pyrazol-5-yl]amino}methylidene)propanedioate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 377.82 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C18H20ClN3O4 |
| Molecular Weight | 377.82 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Diethyl Standards
- 1,3-diethyl 2-(3-bromo-4-chlorobenzoyl)propanedioate (CAS 1550537-55-7)
- Diethyl 2-(1-(2,4-dichlorophenyl)-2-nitroethyl)malonate (CAS 866152-99-0)
- 2,4-Diethyl 3-methyl-5-[(phenoxycarbonyl)amino]thiophene-2,4-dicarboxylate (CAS 709021-08-9)
- diethyl (E)-5-methoxy-2-(3-methoxy-3-oxoprop-1-en-1-yl)indoline-3,3-dicarboxylate (CAS 114560-14-4)
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Recommended Standards
- (E)-1-[(2E)-3-(4-Chlorophenyl)-1-(4-nitrophenyl)prop-2-en-1-ylidene]-2-phenylhydrazine (CAS 338777-21-2)
- 1-Benzyl-2-oxoindolin-3-yl 4-chlorobenzoate (CAS 400076-66-6)
- (4-Bromo-2-chloro-3-methylphenoxy)triisopropylsilane (CAS 1799612-12-6)
- 1-Chloro-8-((4-ethoxyphenyl)amino)anthracene-9,10-dione (CAS 848679-23-2)
- (S)-2-(4-(trifluoromethoxy)phenyl)oxirane (CAS 850401-91-1)
- N-(2-Bromophenyl)-4-methoxybenzenesulfonamide (CAS 333449-40-4)
- 7-Amino-4-(trifluoromethyl)coumarin (CAS 53518-15-3)
- Naproxen Impurity 34 (CAS CATO-C4X-170834)
- Methyl (2S,4S)-4-(trifluoromethyl)pyrrolidine-2-carboxylate hydrochloride (CAS 1860943-66-3)
- (1R,2R,5R)-Isomenthol (CAS 20752-34-5)
- Ethyl 2-Cyclopropylpyrimidine-4-carboxylate (CAS 1192801-25-4)
- 3-{[(2,4-Dichlorobenzyl)oxy]methyl}pyrrolidinehydrochloride (CAS 1219967-75-5)
- 2-Imino-N-(3-methoxypropyl)-10-methyl-5-oxo-1-propyl-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide (CAS 510762-14-8)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
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