DR TIM EVANS / SCIENCE PHOTO LIBRARY DR TIM EVANS / SCIENCE PHOTO LIBRARY
Malathion. Computer model of a molecule of the organophosphate pesticide malathion. It has the formula C10.H19.O6.P.S2. The atoms are shown as spheres and are colour- coded: carbon (blue), hydrogen (white), oxygen (red), phosphorus (green) and sulphur (yellow). Malathion is a wide- spectrum pesticide used to protect crops from sucking and chewing insects and to treat lice on humans. It belongs to a class of chemicals called cholinesterase inhibitors, which kill by blocking the enzyme acetylcholinesterase, causing paralysis. Large doses of malathion are toxic to humans and can be fatal.
Model release not required. Property release not required.