It is. See the various Wikipedia links given here: https://news.ycombinator.com/item?id=13720517 https://news.ycombinator.com/item?id=13720517 - it also contain

It is. See the various Wikipedia links given here: https://news.ycombinator.com/item?id=13720517 https://news.ycombinator.com/item?id=13720517 - it also contains the chemical structure. That's actually one of the things which makes chemical weapons far more dangerous than nuclear weapons - it is comparatively easy to produce them without much specialized equipment.