Yurfloo, a poison, was present during the era of the Galactic Civil War. The assassin Ochi of Bestoon obtained this poison from Zlarb's on the planet Coruscant sometime between 3 ABY and 4 ABY. He needed it for his assassination of the Emperor's Royal Guard. Ochi first utilized Ziroxin-12 to contaminate the breakfast intended for the Royal Guard. However, he later discovered that one of the guards was missing. Upon locating the guard, Ochi had to administer Yurfloo to the guard, due to the inconsistent timing of the first poisoning.