3-Chloro-5-ethyl-1,2,4-oxadiazole CAS 1256643-47-6

Description

The occurrence of 3-Chloro-5-ethyl-1,2,4-oxadiazole is closely related to an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

3-Chloro-5-ethyl-1,2,4-oxadiazole (CAS 1256643-47-6), molecular formula C4H5ClN2O and molecular weight 132.55 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 3-Chloro-5-ethyl-1,2,4-oxadiazole (C4H5ClN2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 132.55 g/mol, it falls into the low-molecular-weight range. 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.

CATO manufactures 3-Chloro-5-ethyl-1,2,4-oxadiazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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