2-Pentanone, 1-(5-(3-furyl)tetrahydro-2-methyl-2-furyl)-4-methyl- (8CI) 2-Pentanone, 4-methyl-1-(2,3,4,5-tetrahydro-5-methyl(2,3'-bifuran)-5-yl)- (9CI) 20007-82-3 26767-94-2 4-Methyl-1-(2,3,4,5-tetrahydro-5-methyl(2,3'-bifuran)-5-yl)-2-pentanone Ipomeamarone NSC 317536 Ngaione