Diaminomaleonitrile1187-42-4100 % similar Tetracyanoethylene670-54-240 % similar 2-Amino-1-propene-1,1,3-tricarbonitrile868-54-235 % similar Mesoxalonitrile1115-12-433 % similar 2-Amino-1-cyclopentene-1-carbonitrile2941-23-333 % similar Isopropylidenemalononitrile13166-10-430 % similar Tetracyanoquinodimethane1518-16-730 % similar