Comment by jandrewrogers

This knowledge isn't regulated.

Anyone with a degree in chemistry can successfully synthesize chemical weapons. This is all public domain knowledge and the chemistry is relatively simple. The technical execution is the hard part but many, many people have these lab/engineering skills. Delivery systems are the hardest part but those are military implementation details and therefore non-public.

It is the same with explosives. Anyone with chemistry skills could synthesize high-performance military explosives, it isn't difficult. Nonetheless, bombings tend to be low-grade explosives like ANFO or garbage explosives like TATP, because the people with the skills aren't the same people that do bombings.

As a chemist you are required to be knowledgeable in these things in part because it is relatively easy to inadvertently synthesize chemicals with rather dangerous properties. Part of the job is knowing what to not do for safety reasons.