This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 17-O-acetylnorajmaline:NADP+ oxidoreductase. This enzyme participates in indole and ipecac alkaloid biosynthesis.
Gao S, von Schumann G, Stockigt J (2002). "A newly-detected reductase from Rauvolfia closes a gap in the biosynthesis of the antiarrhythmic alkaloid ajmaline". Planta. Med.68 (10): 906–11. doi:10.1055/s-2002-34935. PMID12391554.