Agronomy/chemistry term. Chinese names a pesticide componentially:
甲 'methyl,'
氰 'cyano,'
菊酯 'pyrethrin ester' — i.e. the methyl-cyano member of the pyrethroid family. Most pyrethroid names in Chinese end in
菊酯, e.g.
氯氰菊酯 (cypermethrin),
溴氰菊酯 (deltamethrin).
