3-((dimethylcarbamoyl)oxy)-1-methylpyridin-1-ium bromide-D6;3-[[(Dimethylamino)carbonyl]oxy]-1-methyl-pyridinium Bromide-d6; 3-Hydroxy-1-methylpyridinium Bromide Dimethylcarbamate-d6; 1-Methyl-3-hydroxypyridinium Bromide Dimethylcarbamate-d6; 3-[[(Dimethylamino)carbonyl]oxy]-1-methylpyridinium Bromide-d6; Kalimin-d6; Kalymin-d6; Mestinon-d6; Mestinon Bromide-d6; Piridostigmin-d6;