1,3-Indandione, 2-(1-(1-methylethyl)-4(1H)-pyridinylidene)- 2-(1-(1-Methylethyl)-4(1H)-pyridinylidene)-1,3-indandione 2-(1-(1-Methylethyl)-4(1H)-pyridinylidene)-1H-indene-1,3(2H)-dione 49803-32-9 5-21-11-00390 (Beilstein Handbook Reference) BRN 1535221