2-Cyanoethyl allyl ether 3-(Allyloxy)propionitrile 3088-44-6 Allyl .beta.-cyanoethyl ether Allyl 2-cyanoethyl ether NSC2291 Propanenitrile, 3-(2-propenyloxy)- Propionitrile, (.beta.-allyloxy)- Propionitrile, 3-(allyloxy)- WLN: NC2O2U1