4-羟基-3,5-二碘吡啶

[2,2-联吡啶]-6-甲醛

6-(6-methylpyridin-2-yl)pyridine-2-carbaldehyde

2,6-双二苯基膦基吡啶

6-diphenylphosphanyl-1H-pyridin-2-one