Between 1891 and 1894 , Fischer established the stereochemical configuration of all the known sugars .
Between 1891 and 1894 , Fischer correctly predicted the possible isomers , applying van ' t Hoff 's theory of asymmetrical carbon atoms .
Between 1891 and 1894 , Fischer established the stereochemical configuration of all the known sugars and correctly predicted the possible isomers , applying van ' t Hoff 's theory of asymmetrical carbon atoms .