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(2007/10/02)Trifluoro-methanesulfonate2-bromo-4-ethoxycarbonyl-1-methyl-pyridinium;
Trifluoro-methanesulfonate2-chloro-4-ethoxycarbonyl-1-methyl-pyridinium;
1-methyl-2-oxo-1,2-dihydro-4-pyridinecarboxylic acid
ethanol
4-(methoxycarbonyl)-1-methylpyridinium iodide