cyclohexane-1,3-dione + AH2 => 3-hydroxycyclohexanone + A
cyclohexane-1,3-dione + ah2 => 3-hydroxycyclohexanone + a
cyclohexane-1,3-dione + AH2 => 3-hydroxycyclohexanone + A
cyclohexane-1,3-dione + ah2 => 3-hydroxycyclohexanone + a