VM (nerve agent)
IUPAC name	2-(ethoxy- methylphosphoryl) sulfanyl- N,N-diethylethanamine
Identifiers
CAS number	21770-86-5
PubChem	30800
SMILES	CCN(CC)CCSP(=O)(C)OCC
Properties
Molecular formula	C9H22NO2PS
Molar mass	239.32 g/mol
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

VM (Edemo) is a "V-series" nerve agent closely related to the better-known VX nerve agent.^[1]

Like most of the agents in the V-series (with the exception of VX), VM has not been extensively studied outside of military science. Little is known about this chemical compound other than its chemical formula.^[1]

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. The 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.^[1]

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