Muscarine

Formula : C9-H20-N-O2
CAS : 300-54-9 

A toxic alkaloid found in Amanita muscaria (fly fungus) and other fungi of the Inocybe species. It is the first parasympathomimetic substance ever studied and causes profound parasympathetic activation that may end in convulsions and death. The specific antidote is atropine.

Muscarine chloride

Formula : C9-H20-N-O2.Cl
CAS : 2303-35-7 

A toxic alkaloid found in Amanita muscaria (fly fungus) and other fungi of the Inocybe species. It is the first parasympathomimetic substance ever studied and causes profound parasympathetic activation that may end in convulsions and death. The specific antidote is atropine.

Muscarinic toxin 2

Formula : C229-H476-N86-O97-S8
CAS : 135317-04-3 

Muscarinic agonists from Dendroaspis angusticeps.

Muscarone

Formula : C9-H18-N-O2
CAS : 13552-60-8 

Allomuscarone is the trans-isomer (2R, 5S or 2S, 5R).