489-84-9 7-isopropyl-1,4-dimethylazulene InChI=1/C15H18/c1-10(2)13-7-5-11(3)14-8-6-12(4)15(14)9-13/h5-10H,1-4H azulene, 1,4-dimethyl-7-(1-methylethyl)-