2,4(1H,3H)-Quinolinedione, 3,3'-(1H-isoindole-1,3(2H)-diylidene)bis- 3,3'-(1H-Isoindole-1,3(2H)-diylidene)bisquinoline-2,4(1H,3H)-dione 85223-06-9 EINECS 286-359-6