Ethyl 4-(1-ethyl-3,5-dimethyl-1H-pyrazol-4-yl)-2,4-dioxobutanoate CAS 956935-27-6
| CAS No. | 956935-27-6 |
| Molecular Formula | C13H18N2O4 |
| Molecular Weight | 266.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl 4-(1-ethyl-3,5-dimethyl-1H-pyrazol-4-yl)-2,4-dioxobutanoate (CAS 956935-27-6), a certified reference material (molecular formula C13H18N2O4, MW 266.29 g/mol) for analytical method development and quality control.
The molecular framework of Ethyl 4-(1-ethyl-3,5-dimethyl-1H-pyrazol-4-yl)-2,4-dioxobutanoate (C13H18N2O4) is characterized by a nitrogen-containing heterocyclic scaffold, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Ethyl 4-(1-ethyl-3,5-dimethyl-1H-pyrazol-4-yl)-2,4-dioxobutanoate 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 | C13H18N2O4 |
| Molecular Weight | 266.29 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
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