Definition: Thiocyanogen is a type of compound that is commonly found in marine and freshwater organisms, especially those containing chloroplasts. It is composed of two isotopes, thiohydantoin and thioanisotol, which are linked together through the hydrogen bonding between the two isotopes. In addition to being an important component of cellular energy production, thiocyanogen is also found in a variety of other tissues and organs in the body. Thiocyanogen is often