Diethyl 2-(((3-methyl-1-(p-tolyl)-1H-pyrazol-5-yl)amino)methylene)malonate CAS 956574-51-9
| CAS No. | 956574-51-9 |
| Molecular Formula | C19H23N3O4 |
| Molecular Weight | 357.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Diethyl 2-(((3-methyl-1-(p-tolyl)-1H-pyrazol-5-yl)amino)methylene)malonate (C19H23N3O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Diethyl 2-(((3-methyl-1-(p-tolyl)-1H-pyrazol-5-yl)amino)methylene)malonate (CAS 956574-51-9), molecular formula C19H23N3O4 and molecular weight 357.40 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Diethyl 2-(((3-methyl-1-(p-tolyl)-1H-pyrazol-5-yl)amino)methylene)malonate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H23N3O4 |
| Molecular Weight | 357.40 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
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- 5-Cyclopropyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-amine (CAS 1346673-35-5)
- Methyl 3,4-dichloro-2-fluorobenzoate (CAS 1279707-12-8)
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- (5aR)-7-Desdimethylamino-7-((2-(dimethylamino)ethyl)(methyl))amino)-Minocycline (CAS CATO-C4X-169936)
- Acetyl Tripeptide-1 (CAS 350595-76-5)
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