The nerve agent VX has recently been in the news. VX (O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate) is a tasteless, odorless, and toxic organophosphate that disrupts the body's nervous system. Exposure to very small amounts on the skin or via inhalation can be fatal. It is classified as a weapon of mass destruction (WMD) by the United Nations Resolution 687. http://www.un.org/Depts/unscom/Chronology/resolution687.htm The National Library of Medicine (NLM) Chemical Hazards Emergency Management (CHEMM) can help you learn more about VX. CHEMM assists first responders, first receivers and other healthcare providers to plan for, respond to, recover from, and mitigate the effects of mass-casualty incidents involving chemicals. It provides a comprehensive, user-friendly, web-based resource that is also downloadable in advance so that it would be available during an event if the internet is not accessible. https://chemm.nlm.nih.gov/index.html NLM TOXNET also has information about VX.   http://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:**At_Symbol_Here**term+**At_Symbol_Here**DOCNO+6459 TOXNET =AE (TOXicology Data NETwork) is a group of databases covering chemicals and drugs, diseases and the environment, environmental health, occupational safety and health, poisoning, risk assessment and regulations, and toxicology. It is managed by the Toxicology and Environmental Health Information Program (TEHIP) in the Division of Specialized Information Services (SIS) of the National Library of Medicine (NLM). A mobile version of TOXNET is available. Use TOXNET to find: Specific chemicals, mixtures, and products Chemical nomenclature Chemicals that may be associated with a disease, condition or symptom Chemicals associated with consumer products, occupations, hobbies, and more Special toxic effects of chemicals in humans and/or animals Citations from the scientific literature  TOXNET provides links to PubMed =AE, NLM's free web interface to the world's biomedical literature, and to additional sources of toxicological information.