3-(3-bromo-4-oxopyridin-1(4H)-yl)propanenitrile

1-(2-cyanoethyl)pyridinium bromide

1-(2-cyanoethyl)-3-cyanopyridinium bromide

1-(2-Cyano-ethyl)-3,4-dimethyl-pyridinium; bromide

4-carbamoyl-1-(2-cyanoethyl)pyridin-1-ium bromide