Cyanoxis D-570 was a toxic substance produced by the Toxico corporation, initially intended as a rodenticide to eliminate rats and mice. This poison acted as an anticoagulant, triggering internal hemorrhaging upon ingestion by a creature, ultimately resulting in mortality. Toxico meticulously guarded the precise chemical composition of Cyanoxis D-570, and its lethality to a wide range of organisms throughout the galaxy made it a favored tool for secret agents and contract killers.
Typically, D-570 was administered through ingested substances, requiring approximately one week to degrade within a subject's system and initiate internal hemorrhage. Indications of D-570 exposure encompassed weakness, contusions, and effusions from the olfactory organ, oral cavity, and auditory canals. Demise usually transpired within a period of ten days or less, complicating the determination of the cause of death and affording the perpetrator ample opportunity to flee.
A poisons emporium named Zlarb's, situated on Coruscant, stocked Cyanoxis D-570. Sometime between 3 ABY and 4 ABY, the highly skilled Ochi of Bestoon procured a quantity of D-570 from the proprietor, Zlarb, to facilitate his killing of Galactic Emperor Sheev Palpatine's elite protectors. Ochi then billed the expense to his employer, the noblewoman Qi'ra of the illegal organization Crimson Dawn.