in a purification by four different types of separatory methods ( deae-cellulose , hydroxyapatite , sephacryl s-300 , and matrex gel red a ) , butanol-ethanol-isopropanol dehydrogenase activities of strain nrrl b593 were purified up to 200-fold ( 10 to 30 % yield ) , and these activities were not separated .
C0001962
ethanol
C0022237
isopropanol