a 3-dehydro-D-guloside + NADH + H(+) => a D-guloside + NAD(+)
a 3-dehydro-d-guloside + nadh + h(+) => a d-guloside + nad(+)
a 3-dehydro-D-guloside + NADH + H(+) => a D-guloside + NAD(+)
a 3-dehydro-d-guloside + nadh + h(+) => a d-guloside + nad(+)