Synonyms: 2,6,6-Trimethylcyclohex-2-ene-1,4-dione; 2,2,6-trimethyl-2-cyclohexene-1,4-dione (cetoisophorone); 2,2,6-trimethylcyclohex-2-en-1,4-dione (4-oxo-isophorone); 2,6,6-Trimethy-2-cyclohexene-1,4-dione (4-oxoisophorone); 2,6,6-trimethyl-2-cyclohexene-4-dione; 2,6,6-trimethylcyclohex-; 2,6,6-trimethylcyclohex-2-ene; 2-Cyclohexen-1,4-dione, 2,6,6-trimethyl; 2-Cyclohexene-1,4-dione, 2,6,6-trimethyl-