((2,3,4,6-Tetrachlorophenyl)hydrazono)propanedinitrile (Tetrahydro-4,6-dioxo-1,3,5-triazin-2(1H)-ylidene)propanedinitrile 64692-10-0 BRN 1824099 Mesoxalonitrile, (2,3,4,6-tetrachlorophenyl)hydrazone Propanedinitrile, ((2,3,4,6-tetrachlorophenyl)hydrazono)-