Monosaccharide osazones from

Fischer was the first to synthesize and determine the structures of a number of the sugars used in the experiments in this section. He studied the hydrolysis of glucosides and disaccharides in much the same way you may if you perform the hydrolysis of sucrose (Sec. 23.3). He was also the first to synthesize phenylhydrazine, which you may use to form the same osazones he did in his pioneering work in characterizing sugars (Sec. 23.4). You can share his excitement as you observe the formation of the solid osazones from the combination of different monosaccharides with excess phenylhydrazine. 

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