3-Chloro-4-cyclohexyl-gamma-oxobenzenebutanoic acid butyl ester 32808-54-1 BRN 2901483 Benzenebutanoic acid, 3-chloro-4-cyclohexyl-gamma-oxo-, butyl ester Butyl 3-chloro-4-cyclohexyl-gamma-oxobenzenebutanoate CB 832