4976-25-4 AI3-44563 Ethanone, 1-(2,3-dihydro-2-(1-methylethenyl)-5-benzofuranyl)-, (R)- (9CI) Ketone, 2,3-dihydro-2-isopropenyl-5-benzofuranyl methyl (8CI) NSC 247531 Tremeton Tremetone