1,3-Indandione, 2-((dimethylamino)methylene)- 1H-Indene-1,3(2H)-dione, 2-((dimethylamino)methylene)- 2-((Dimethylamino)methylene)-1H-indene-1,3(2H)-dione 28752-91-2 COR 3761 Dimethylaminomethylene-2 indanedione-1,3 [French] NSC 168547