1H-Naphth(2,3-f)isoindole-1,3,5,10(2H)-tetrone, 4,11-diamino-2-(2-butoxyethyl)- 4,11-Diamino-2-(2-butoxyethyl)-2,3-dihydronaphth(2,3-f)isoindole-1,3,5,10-tetrone 67801-05-2