2-methyl-4-pyridin-2-yl-2-(2-pyridin-2-ylethyl)butanenitrile

1-(吡啶-2-基)-2-丁酮

2-氰基丙酸

2-phenylselanylpropanenitrile

2,3,4,6-四乙基-1,4-吡嗪