Function
Reduces benzil stereospecifically to (S)-benzoin. Can also reduce 1-phenyl-1,2-propanedione, 1,4-naphthoquinone, 1-(4-methyl-phenyl)-2-phenyl-ethane-1,2-dione, 1-(4-fluoro-phenyl)-2-phenyl-ethane-1,2-dione, methyl benzoylformate, p-nitrobenzaldehyde in decreasing order.