The reagent used for obtaining osazone derivative of fructose is
(a) NH2OH
(b) NH2 – NH2
(c) NH2 – NHC6H5
(d) 2, 4-DNP
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(c) NH2 – NHC6H5
Explanation:
The reagent used for obtaining osazone derivative of fructose is NH2 – NHC6H5. Phenylhydrazine is the chemical compound with the formula C6H5NHNH2. It is often abbreviated as PhNHNH2. Phenylhydrazine appears as pale yellow crystals. It is toxic by ingestion, inhalation and skin absorption. When glucose reacts with excess of phenyl hydrazine, it forms crystalline osazone derivative. The derivative so formed is called glucosazone. Please refer to the attached image for osazone formation from various monosaccharides.
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