RARECHEM AM UC 0304;1-Penten-3-one, 1-(1,3-benzodioxol-5-yl)-4,4-dimethyl-;4,4-DiMethyl-1-(3,4-Methylenedioxyphenyl)-1-penten-3-one;1-(3,4-METHYLENEDIOXY-BENZYLIDENE)-3,3-DIMETHYLBUT-2-ONE;2,2-dimethyl-5-(3,4-methylenedioxyphenyl)4-ene-3-pentanone;4,4-DiMethyl-1-[3,4-(Methylenedioxy)phenyl]-1-penten-3-one;1-(3,4-METHYLENEDIOXY-PHENYL)-4,4-DIMETHYL-PENT-1-EN-3-ONE