1-Oxaspiro(4.5)dec-3-en-2-one, 4-(2-chlorobenzoyl)-3-methyl- 2-Chlorobenzoyl-3 methyl-2 cyclohexane spiro-4,4-butene-2 olide-4 [French] 4-(2-Chlorobenzoyl)-3-methyl-1-oxaspiro(4.5)dec-3-en-2-one 86560-09-0 BRN 5093853