Ryanoid

Ryanoids are a class of insecticides which share the same mechanism of action as the alkaloid ryanodine. Ryanodine is a naturally occurring insecticide isolated from Ryania speciosa.

Ryanoids include natural chemicals which are closely related to ryanodine, such as ryanodol and 9,21-didehydroryanodol, and also chemically distinct synthetic compounds such as chlorantraniliprole (Rynaxypyr), flubendiamide, cyantraniliprole, cyclaniliprole, and tetraniliprole (Tetrino), which are called diamide insecticides.

Ryanoids exert their insecticidal effect by interacting with ryanodine receptors, a type of calcium channel. This causes loss of muscle function leading to paralysis and death.