Methyldibromo glutaronitrile: similar to the previously mentioned use areas,Methyldibromo glutaronitrile (MDGN) is suitable for a number of material protection applications. It is also known as 2-Bromo-2-(bromomethyl)-pentanedinitrile or 1,2-Dibromo-2,4-dicyanobutane.It dates back to 1969(structure 2).