1-Trimethyl-d6-acetyl-2-(2,4-dichloro-5-isopropoxyphenyl)hydrazine is the labeled analogue of 1-Trimethylacetyl-2-(2,4-dichloro-5-isopropoxyphenyl)hydrazine (T796240), an impurity found from the degredation of Indoxacarb (I654000), an oxadiazine pesticide that acts against lepidopteran larvae and is the active ingredient in a number of household insecticides including cockroach baits.