D-iditol + NAD(+) <=> keto-D-sorbose + NADH + H(+)
d-iditol + nad(+) <=> keto-d-sorbose + nadh + h(+)
D-iditol + NAD(+) <=> keto-D-sorbose + NADH + H(+)
d-iditol + nad(+) <=> keto-d-sorbose + nadh + h(+)