1-Oxaspiro(4.5)dec-6-ene, 2,6,10,10-tetramethyl- 1-Oxaspiro-2,6,10,10-tetramethyl(4.5)dec-6-ene 2,6,10,10-Tetramethyl-1-oxaspiro(4.5)dec-6-ene 36431-72-8 EINECS 253-031-9 FEMA No. 3774 Theaspirane