galactitol 2-dehydrogenase activity
Catalysis of the reaction: galactitol + NAD+ = D-tagatose + H+ + NADH.
GO:0016616
oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor
is_a
GO:0031320
hexitol dehydrogenase activity
is_a