2-Methylbutane secondary mononitrile 3-Methylbutyronitrile 4-02-00-00902 (Beilstein Handbook Reference) 625-28-5 BRN 1734239 Butanenitrile, 3-methyl- Butyronitrile, 3-methyl- EINECS 210-884-1 ISOVALERONITRILE Isoamylnitrile Isobutyl cyanide Isopentane nitrile NSC 148363