DR TIM EVANS / SCIENCE PHOTO LIBRARY DR TIM EVANS / SCIENCE PHOTO LIBRARY
Diazinon. Computer model of a molecule of the organophosphate pesticide diazinon. It has the formula C12.H21.N2.O3.P.S. The atoms are shown as spheres and are colour-coded: carbon (light blue), hydrogen (white), nitrogen (dark blue), oxygen (red), phosphorus (green) and sulphur (yellow). Diazinon is used to protect crops and garden plants from sucking and leaf-eating insects and as a household insecticide against fleas, flies and ants. It belongs to a class of chemicals called cholinesterase inhibitors, which kill by blocking the enzyme acetylcholinesterase, causing paralysis. Large doses of diazinon are toxic to humans and can be fatal.
Model release not required. Property release not required.