2-(hydroxy-[2]pyridyl-methyl)-acetoacetic acid ethyl ester

N-(2,2-二乙氧基乙基)吡啶-2-甲胺

5-(pyridin-2-ylmethylidene)-2-sulfanylideneimidazolidin-4-one

5,6-dimethyl-2-pyridin-2-yl-1H-benzimidazole

1-hydroxy-2,2,6,6-tetramethylpiperidine