Cyanogen was a poisonous gas used by the Fourth Doctor to try and stop Solomon from resurrecting Morbius.
It could synthesized from hydrogen cyanide. (TV: The Brain of Morbius)
Cyanogen was a poisonous gas used by the Fourth Doctor to try and stop Solomon from resurrecting Morbius.
It could synthesized from hydrogen cyanide. (TV: The Brain of Morbius)