.beta.-Butenonitrile 1-Butene-4-nitrile 109-75-1 3-Butenenitrile 3-Butenonitrile 3-Butenylnitrile 3-Cyano-1-propene 3-Cyanopropene ALLYL CYANIDE Acetonitrile, vinyl- Allylnitrile NSC2583 Propene-3-nitrile TL 350 Vinylacetonitrile WLN: NC2U1