Clodinafop-propargyl- 13 C 6 is the 13 C-labeled Clodinafop-propargyl. Clodinafop-propargyl, a main member of aryloxyphenoxy-propionate herbicides, is used for postemergence control of annual grasses in cereals, including Avena, Lolium, Setaria, Phalaris and Alopecurus spp. Clodinafop-propargyl-13C6 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.