Displaying 2 results of Senecionine Stable Isotopes Senecionine Stable Isotopes are isotopically labeled forms of senecionine, a toxic alkaloid found in plants of the Senecio genus. These stable isotopes are used in research to study the metabolism and toxicity of senecionine in living organisms. They are also used as internal standards in analytical methods for the detection and quantification of senecionine in biological samples.