1,2beta,3,4,4a,7-hexahydro-3alpha-hydroxy-4aalpha,8-dimethyl-alpha-methylene-7-oxo-2-naphthaleneacetic acid gamma-lactone 10067-18-2 2-Naphthaleneacetic acid, 1,2beta,3,4,4a,7-hexahydro-3alpha-hydroxy-4aalpha,8-dimethyl-alpha-methylene-7-oxo-, gamma-lactone Naphtho(2,3-b)furan-2,6(3H,4H)-dione, 3a,8a,9,9a-tetrahydro-5,8a-dimethyl-3-methylene-, (3aR-(3aalpha,8abeta,9aalpha))-