Azobisisobutyronitrile78-67-1100 % similar Pivalonitrile630-18-242 % similar 2,2′-Azobis[2-methylbutyronitrile]13472-08-740 % similar 2-Amino-2-methylpropanenitrile19355-69-236 % similar Acetone cyanohydrin75-86-536 % similar 2,2′-Azobis[2,4-dimethylvaleronitrile]4419-11-836 % similar 2,3-Dimethyl-2-(1-methylethyl)butanenitrile55897-64-833 % similar Abcn2094-98-632 % similar