4-hydroxy-2-butynal + NADH + H(+) => 2-butyne-1,4-diol + NAD(+)
4-hydroxy-2-butynal + nadh + h(+) => 2-butyne-1,4-diol + nad(+)
4-hydroxy-2-butynal + NADH + H(+) => 2-butyne-1,4-diol + NAD(+)
4-hydroxy-2-butynal + nadh + h(+) => 2-butyne-1,4-diol + nad(+)