5,6,7,8-tetrahydropteridine + NAD(+) <=> 6,7-dihydropteridine + NADH + H(+)
5,6,7,8-tetrahydropteridine + nad(+) <=> 6,7-dihydropteridine + nadh + h(+)
5,6,7,8-tetrahydropteridine + NAD(+) <=> 6,7-dihydropteridine + NADH + H(+)
5,6,7,8-tetrahydropteridine + nad(+) <=> 6,7-dihydropteridine + nadh + h(+)