(1-Methylpyrrol-2-ylmethylene)malononitrile 1-Methyl-2-pyrrolemethylenemalononitrile 79691-33-1 MALONONITRILE, (1-METHYLPYRROL-2-YLMETHYLENE)- Propanedinitrile, ((1-methyl-1H-pyrrol-2-yl)methylene)-