ID 1.1.1.71 DE Alcohol dehydrogenase (NAD(P)(+)). AN Retinal reductase. CA An alcohol + NAD(P)(+) = an aldehyde + NAD(P)H. CC -!- Reduces aliphatic aldehydes of chain length from C2 to C14, with CC greatest activity on C4, C6 and C8 aldehydes. CC -!- Also reduces retinal to retinol. //