B 2371 (OTTO) 1-Butyl-3-methylimidazolium chloride, puriss, 98% Cas 79917-90-1 - used in chromatographic separations. B 2371 (OTTO) 1-Butyl-3-methylimidazolium chloride, puriss, 98% Cas 79917-90-1 - used as an ionic liquids for catalysis. B 2371 (OTTO) 1-Butyl-3-methylimidazolium chloride, puriss, 98% Cas 79917-90-1 - used in anion exchange reactions.