4.alpha.H-Eudesma-5,11(13)-dien-12-oic acid, 8.beta.-hydroxy-, .gamma.-lactone 546-43-0 Alant camphor Alantolactone Elecampane camphor Eupatal Helenin Helenine Inula camphor NSC93131 Naphtho[2,3-b]furan-2(3H)-one, 3a,5,6,7,8,8a,9,9a-octahydro-5,8a-dimethyl-3-methylene-, [3aR-(3a.alpha.,5.beta.,8a.beta.,9a.alpha.)]-