obsolete cis-2-methyl-5-isopropylhexa-2,5-dienal dehydrogenase activity (obsolete GO:0018473)
OBSOLETE. Catalysis of the reaction: cis-2-methyl-5-isopropylhexa-2,5-dienal + NAD+ + H2O = NADH + H+ + cis-2-methyl-5-isopropylhexa-2,5-dienoic acid.