3,3,6,6-tetramethyloxepane-4,5-dione;3,3,6,6-tetramethyloxepane-4,5-quinone;42031-65-2;1,2-Cycloheptanedione, 5-oxa-3,3,7,7-tetramethyl-;4,5-Oxepanedione, 3,3,6,6-tetramethyl-
3,3,6,6-tetramethyloxepane-4,5-dione