Scopolamine hydrobromide is a salt of the base Scopolamine, it's a very dangerous and toxic substance used to rob and rape in Sout America
Scopolamine butylbromide is the butylbromide salt of Scopolamine. Despite the structural analogy it is used against spasms.
Scopolamine Methyl nitrate is a drug used as an anticholinergic agent to treat motion sickness, as an adjunct in treating duodenal and gastric ulcers, and to treat infantile colic.
Basically, at high doses (which is quite a low amount), everyone of these can kill you. Better stay awy