2-(dimethyl-$l^{4}-sulfanylidene)indene-1,3-dione;2-(dimethyl-$l^{4}-sulfanylidene)indane-1,3-dione;2-(dimethyl-$l^{4}-sulfanylidene)indane-1,3-quinone;5508-42-9;Sulfonium,dimethyl-2,3-dihydro-1,3-dioxo-1H-inden-2-ylide
2-(dimethyl-$l^{4}-sulfanylidene)indene-1,3-dione