((2,4,6-Trichloro-3-methylphenyl)hydrazono)propanedinitrile 64692-11-1 BRN 0670613 Mesoxalonitrile, (2,4,6-trichloro-m-tolyl)hydrazone Propanedinitrile, ((2,4,6-trichloro-3-methylphenyl)hydrazono)-