2,4,6-CYCLOHEPTATRIEN-1-ONE, 4-HYDROXY- 4-08-00-00175 (Beilstein Handbook Reference) 4-Hydroxy-2,4,6-cycloheptatrien-1-one 4-Hydroxytropone 4636-39-9 5-Hydroxytropone BRN 2238288 gamma-Tropolone