This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 1,5-anhydro-D-glucitol:NADP+ oxidoreductase.
Sakuma M; Kametani S; Akanuma H (January 1998). "Purification and some properties of a hepatic NADPH-dependent reductase that specifically acts on 1,5-anhydro-D-fructose". J. Biochem. Tokyo. 123 (1): 189&ndash, 193. doi:10.1093/oxfordjournals.jbchem.a021909. PMID9504428.