methylglyoxal + NADH + H(+) => (R)-lactaldehyde + NAD(+)
methylglyoxal + nadh + h(+) => (r)-lactaldehyde + nad(+)
methylglyoxal + NADH + H(+) => (R)-lactaldehyde + NAD(+)
methylglyoxal + nadh + h(+) => (r)-lactaldehyde + nad(+)