| CAS No. | 565196-84-1 |
| Molecular Formula | C8H10N2O4 |
| Molecular Weight | 198.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 198.18 g/mol gives 3-Ethyl 5-methyl 1H-pyrazole-3,5-dicarboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Ethyl 5-methyl 1H-pyrazole-3,5-dicarboxylate (CAS 565196-84-1) is a high-purity analytical reference standard with the molecular formula C8H10N2O4 and a molecular weight of 198.18 g/mol.
Based on its molecular formula C8H10N2O4, 3-Ethyl 5-methyl 1H-pyrazole-3,5-dicarboxylate contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.18 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).
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), 3-Ethyl 5-methyl 1H-pyrazole-3,5-dicarboxylate 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.
| Molecular Formula | C8H10N2O4 |
| Molecular Weight | 198.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 2 |