Piperonylbutoxide-(butyl-d9) is an isotope labeled analog of the insecticide synergist piperonyl butoxide, wherein the butoxy protons are replaced by deuterium. Synonyms: 2-[2-(Butoxy-d9)ethoxy]ethyl (6-propylpiperonyl) ether; 4,5-Methylenedioxy-2-propylbenzyldiethyleneglycol butyl-d9 ether;...