(1,1-dimethylpiperidin-1-ium-4-yl) 2,2-di(phenyl)acetate 2,2-di(phenyl)acetic acid (1,1-dimethyl-4-piperidin-1-iumyl) ester 2,2-di(phenyl)acetic acid (1,1-dimethylpiperidin-1-ium-4-yl) ester (1,1-dimethylpiperidin-1-ium-4-yl) 2,2-di(phenyl)ethanoate NCGC00163244-01 NCGC00024611-01 Tocris-0482 Lopac0_000407 Lopac-D-104 NCGC00015304-01 4-Damp methobromide 4-Diphenylacetoxy-1,1-dimethylpiperidinium