.beta.-Chloropropionitrile 1-Chloro-2-cyanoethane 3-CHLOROPROPIONITRILE 3-Chloropropanenitrile 3-Chloropropanonitrile 542-76-7 NSC2588 Propanenitrile, 3-chloro- Propionitrile, 3-chloro- Usaf a-8798 WLN: NC2G