Succinonitrile
Succinonitrile, also butanedinitrile, is a nitrile, with the formula of C2H42. It is an odorless, colorless to light brown crystal or colourless waxy solid which melts at 58 °C.
Succinonitrile is produced by the addition of hydrogen cyanide to acrylonitrile :
Hydrogenation of succinonitrile yields putrescine.