Uncommon
3-Quinuclidinyl benzilate
Military incapacitating agent
3-Quinuclidinyl benzilate
3-Quinuclidinyl benzilate (QNB) (IUPAC name 1-azabicyclo[2.2.2]octan-3-yl hydroxy(diphenyl)acetate; U.S. Army code EA-2277; NATO code BZ; Soviet code Substance 78) is an odorless and bitter-tasting, military-grade incapacitating agent. It impairs muscle movement and causes delirium and hallucinations to the point of helplessness. BZ was first synthesized by the Swiss pharmaceutical company Hoffman-LaRoche in 1951, which unsuccessfully tried to develop it into a treatment for gastrointestinal disease. Within a few years, the United States Army took it up as part of its chemical weapons program. Allegations have been made that the U.S. Army used it in the Vietnam War. The Army denies this; in 1969, it officially banned the compound due to its "wide range of variability of effects, long onset time, and inefficiency of existing munitions." There have also been numerous, unproven allegations of its use in Syria, Bosnia and Russia.
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