.alpha.-Methacrylonitrile .alpha.-Methylacrylonitrile 126-98-7 2-Cyano-1-propene 2-Cyanopropene 2-Cyanopropene-1 2-Methyl-2-propenenitrile 2-Methylacrylonitrile 2-Methylpropenenitrile 2-Propenenitrile, 2-methyl- Isopropene cyanide Isopropenylnitrile Methacrylonitrile Methylacrylonitrile NSC24145 Usaf st-40 WLN: NCY1 & U1