1200-55-1 2-((Hydroxyimino)methyl)-1-methylpyridinium methyl sulphate 2-Formyl-1-methylpyridinium methyl sulfate oxime 6735-59-7 Contrastigmin Contrastigmine EINECS 214-852-8 Methylsulphate de methyl-1 N-hydroxy-iminomethyl-2 pyridinium [French] NSC 164891 Pralidoxime methyl sulfate Pyridine-2-aldoxime methylsulfate Pyridinium, 2-((hydroxyimino)methyl)-1-methyl-, methyl sulfate (salt) (9CI) Pyridinium, 2-formyl-1-methyl-, methyl sulfate, oxime RP 7676 Sulfomethylate de pralidoxime [French]