1H-indene-1,3(2H)-dione, 2-methyl- 2-methyl-1H-indene-1,3(2H)-dione 876-83-5 InChI=1/C10H8O2/c1-6-9(11)7-4-2-3-5-8(7)10(6)12/h2-6H,1H