.beta.-Alaninenitrile .beta.-Aminopropionitrile .beta.-Cyanoethylamine 151-18-8 2-Cyanoethylamine 3-Aminopropanenitrile 3-Aminopropionitrile Aminopropionitrile BAPN NSC40641 Propanenitrile, 3-amino- Propionitrile, 3-amino- WLN: Z2CN