2,2'-(Perfluorocyclohexa-2,5-diene-1,4-diylidene)dimalononitrile-13C2 is derived from Potassium Cyanide-13C (P695052), which is the labelled analogue of Potassium Cyanide, a reagent widely used in organic synthesis for the preparation of nitriles and carboxylic acids, particularly in the von Richter reaction.