0-07-00-00159 (Beilstein Handbook Reference) 24545-81-1 3-Thujen-2-one 4-Methyl-1-(1-methylethyl)-bicyclo(3.1.0)hex-3-en-2-one BRN 2042730 Bicyclo(3.1.0)hex-3-en-2-one, 4-methyl-1-(1-methylethyl)- Bicyclo(3.1.0)hex-3-en-2-one, 4-methyl-1-(1-methylethyl)- (9CI) NSC 22046 THUJEN-2-ONE Umbellulon Umbellulone