It was an important factor in the defeat of Naga Sadow's Massassi forces on Kirrek during the Great Hyperspace War. The Celegian Jedi Master Ooroo sacrificed himself by tipping his chamber filled with cyanogen into the Massassi, and, as it shattered, it killed many warriors. He was subsequently poisoned by oxygen.
- Star Wars: Tales of the Jedi — The Fall of the Sith Empire
- Star Wars: Knights of the Old Republic II: The Sith Lords
- Star Wars: The Old Republic
- Lost Tribe of the Sith: Paragon (As cyanogen silicate)
- Knight Errant