Abstract
Application of p-nitrophenylhydrazine to the periodate oxidation product of N-acetylglucosylamine yields, according to the amount of the reagent added, monohydrazone compound first, and then dihydrazone compound. Purification of the oxidation product with baryta and application of p-nitrophenylhydrazine results in the formation of α-acetiminoacetaldehyde p-nitrophenylhydrazone. The structures of the foregoing three compounds were determined by their decomposition and catalytic reduction.