2-demethylmenaquinone-8 + NADPH + H(+) => 2-demethylmenaquinol-8 + NADP(+)
2-demethylmenaquinone-8 + nadph + h(+) => 2-demethylmenaquinol-8 + nadp(+)
2-demethylmenaquinone-8 + NADPH + H(+) => 2-demethylmenaquinol-8 + NADP(+)
2-demethylmenaquinone-8 + nadph + h(+) => 2-demethylmenaquinol-8 + nadp(+)