1 IT5 4-cyano-4-phenylpiperidine-1-carbodithioic acid 1.000 2 WRF 1-methyl-4-phenylpyridin-1-ium 0.765 3 E3X 4-(1-methyl-3,6-dihydro-2h-pyridin-4-yl)phenol 0.722 4 5SH 4-phenylpyridine 0.706