Special note to:
"Automotive: Isopropyl alcohol is a major ingredient in "gas dryer" fuel additives." Syria gets freezing temperatures in winter.
Also 'sarin use' was added 19 April. And the guy added it to the introduction, but it was removed later with the comment "... dangerous molecules are often in part made from everyday chemicals as components."
Organic synthesis is like hacking, someone skilled and determined to get somewhere will get there and there really isn't anything you can do to stop it.
Regulating "precursors" to chemicals is probably a bad idea in general.