(2-Cyanoethyl)methyl amine (Methylamino)propionitrile .beta.-(Methylamino)propionitrile 3-(Methylamino)propionitrile 693-05-0 N-.beta.-Cyanoethylmethylamine N-Methyl-.beta.-aminopropionitrile NSC8399 Propanenitrile, 3-(methylamino)- Propionitrile, 3-(methylamino)-