4-Methyl-tropolone (CAS NO.583-80-2) is also named as 2-Hydroxy-4-methyl-2,4,6-cycloheptatrien-1-one ; 4-08-00-00314 (Beilstein Handbook Reference) ; BRN 2040642 ; 2,4,6-Cycloheptatrien-1-one, 2-hydroxy-4-methyl- .