N-Des(cyano-2-thienylmethyl)-N-(2-thienylcarbonyl) Ethaboxam-d5 is the isotope labelled analog of N-Des(cyano-2-thienylmethyl)-N-(2-thienylcarbonyl) Ethaboxam (D289805); a metabolite of Ethaboxam (E675700) which is a pesticide that is used as a fungicide against fungal infections in crops.