18936-17-9 2-Cyanobutane 2-METHYL BUTYRONITRILE 2-Methylbutanenitrile 2-Methylbutanone cyanohydrin 2-Methylbutyronitrile Butanenitrile, 2-methyl- (9CI) Butyronitrile, 2-methyl- EINECS 242-687-1 NSC 165615 alpha-Methylbutyronitrile