the visible absorption bands in the region 525-575 nm of the catalytic cobalt ion in cobalt ( ii ) horse liver alcohol dehydrogenase show characteristic ph-dependent changes both in the free enzyme and its complexes with nicotinamide adenine dinucleotide ( nad+ ) and nad+ plus ethanol or 2,2,2-trifluoroethanol .
C0001962
ethanol
C0040983
trifluoroethanol