Dichloroacetonitrile3018-12-0100 % similar 2-Chloropropionitrile1617-17-042 % similar 2,3-Dichloropropanenitrile2601-89-038 % similar Cyclopropyl cyanide5500-21-033 % similar Cyclopentanecarbonitrile4254-02-830 % similar Cyclobutanecarbonitrile4426-11-330 % similar