2-Hydroxy-6-methyl-4-pyridin-4-yl-benzoic acid ethyl ester
(4S,12bS)-4-(pyridin-4-yl)-12-tosyl-1,3,4,6,7,12b-hexahydroindolo[2,3-a]quinolizin-2(12H)-one
5-(pyridin-4-yl)cyclohexane-1,3-dione
ethyl 6-(4-pyridinyl)-2-hydroxy-4-oxo-2-cyclohexene-1-carboxylate monosodium salt