3-demethoxyubiquinone 3-hydroxylase (NADH) activity
3-demethoxyubiquinone 3-hydroxylase (nadh) activity
Catalysis of the reaction: a 5-methoxy-2-methyl-3-(all-trans-polyprenyl)benzoquinone + NADH + O2 = a 3-demethylubiquinone + NAD+ + H2O.