1H,4H-3a,8a-Epoxy-4,7-methanoazulene, hexahydro-1,4,10,10-tetramethyl- 3a,8a-Epoxydecahydro-1,4,9,9-tetramethyl-4,7-methanoazulene 67710-71-8 EINECS 266-961-5 Hexahydro-1,4,10,10-tetramethyl-1H,4H-3a,8a-epoxy-4,7-methanoazulene