4,4,5,5-tetramethylcyclopentane-1,3-dione;4,4,5,5-tetramethylcyclopentane-1,3-quinone;74896-19-8;1,3-Cyclopentanedione,4,4,5,5-tetramethyl-;1,3-Cyclopentanedione, 4,4,5,5-tetramethyl-
4,4,5,5-tetramethylcyclopentane-1,3-dione