3-Pyridinecarbonitrile, 5-((3,4-dichlorophenyl)azo)-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-1-(phenylamino)- 5-((3,4-Dichlorophenyl)azo)-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-1-(phenylamino)nicotinonitrile 68214-63-1 EINECS 269-305-6