<unk>  is a cholinesterase inhibitor that is FDA approved for the treatment of muscle weakness and easy fatigability associated with the myasthenic syndrome of Eaton-Lambert.   Common adverse reactions include anemia, leukopenia, and thrombocytopenia resulting from bone marrow suppression.
Guanidine
4-Aminobenzoic acid
Thioguanine
Dihydrouracil
8-Hyydroxyquinoline
Periciazine
Vindesine
N-Nitroso-N-Methylurea