ve (nerve agent) ve (nerve agent) ve (s-(diethylamino)ethyl o-ethyl ethylphosphonothioate) is a "v-series" nerve agent closely related to the better-known vx nerve agent. it was first reported in 1958 as a pesticide. ve names iupac name (s)-(ethyl (ethyl)phosphinate) identifiers cas number 21738-25-0 3d model (jsmol) interactive image chemspider 59011 y pubchem cid 65568 comptox dashboard (epa) dtxsid00893813 inchi inchi=1s/c10h24no2ps/c1-5-11(6-2)9-10-15-14(12,8-4)13-7-3/h5-10h2,1-4h3 ykey: qxrunsumqbtcqs-uhfffaoysa-n yinchi=1/c10h24no2ps/c1-5-11(6-2)9-10-15-14(12,8-4)13-7-3/h5-10h2,1-4h3key: qxrunsumqbtcqs-uhfffaoyay smiles o=p(occ)(sccn(cc)cc)cc properties chemical formula c10h24no2ps molar mass 253.34 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). y verify (what is yn ?) infobox references like most of the agents in the v-series (with the exception of vx), ve has not been extensively studied outside of military science. it is commonly theorized that the so-called "second-generation" v series agents came from a cold war era russian chemical weapons development program. they may have been developed sometime between 1950 and 1990. they have similar lethal dose levels to vx (between 10–50 mg) and have similar symptoms and method of action to other nerve agents that act on cholinesterase, and treatment remains the same, but the window for effectively treating second generation v series seizures is shorter. in addition to the standard seizures, some of the second generation v series agents are known to cause comas.