Sarin nerve gas. Computer artwork of a human wearing a gas mask behind a molecule of the nerve gas Sarin (methylphosphonefluridic, (1-methyl ester), chemical formula (C4. H10. O2. P. F)). The atoms are shown as spheres and are colour-coded: carbon (blue), oxygen (red), hydrogen (white), phosphorus (yellow), fluorine (green). The bonds between them are shown as cylinders. Reflected in the eyepieces of the mask is a city. This image could represent a terrorist attack on a city. Sarin (also known as GB) is used in chemical weapons. Skin contact or inhalation leads to disruption of the nervous system leading to convulsions, paralysis and death.