Ethyl 3-(1-(4-chloro-1h-pyrazol-1-yl)propan-2-yl)-1,2,4-oxadiazole-5-carboxylate CAS 1171337-26-0

Description

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.

Ethyl 3-(1-(4-chloro-1h-pyrazol-1-yl)propan-2-yl)-1,2,4-oxadiazole-5-carboxylate (CAS 1171337-26-0), molecular formula C11H13ClN4O3 and molecular weight 284.70 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, Ethyl 3-(1-(4-chloro-1h-pyrazol-1-yl)propan-2-yl)-1,2,4-oxadiazole-5-carboxylate (C11H13ClN4O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 284.70 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

Physical & Chemical Properties

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