Ethyl 3-((4-iodo-1h-pyrazol-1-yl)methyl)-1,2,4-oxadiazole-5-carboxylate CAS 956263-70-0
| CAS No. | 956263-70-0 |
| Molecular Formula | C9H9IN4O3 |
| Molecular Weight | 348.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 3-((4-iodo-1h-pyrazol-1-yl)methyl)-1,2,4-oxadiazole-5-carboxylate (CAS 956263-70-0) is a high-purity analytical reference standard with the molecular formula C9H9IN4O3 and a molecular weight of 348.10 g/mol.
Based on its molecular formula C9H9IN4O3, Ethyl 3-((4-iodo-1h-pyrazol-1-yl)methyl)-1,2,4-oxadiazole-5-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 348.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C9H9IN4O3 |
| Molecular Weight | 348.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 4 |
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