First developed in 1944 by American chemist Roger Adams, HHC is a molecule he extracted from delta-9-THC, the psychoactive ingredient in the cannabis plant. Namely, after extracting THC from cannabis, he subjects it to a process called hydrogenation, that is, he added hydrogen molecules to the structure of THC under very high voltage to stabilize it and therefore make it less susceptible to degradation exposed to air, heat or UV radiation. This step therefore converts THC into HHC. Fun Fact: It is the same process that converts vegetable oil into margarine.