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• W2039049904 abstract "Acylation of chitin with butyric acid was performed in the presence of trifluoroacetic anhydride/phosphoric acid mediated system. The products were characterized by 1H NMR and FT-IR spectroscopy and their solubility was tested in different organic solvents. Inclusion of butyric acid moieties into the parent molecule was confirmed from the 1H NMR and FT-IR spectra. FT-IR analysis revealed that the degree of acid substitution (DS) of the products was in a range of 1.9–2.38, which increased with increasing the amounts of butyric acid added to the reaction system. Degree of N-deacetylation (DD) of the products, as determined by 1H NMR was between 54.2% and 65.6%. The products with DS >2.0 were soluble in dimethyl sulfoxide, N,N-dimethylformamide, tetrahydrofuran, methanol, acetone, chloroform, and acetic acid." @default.
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• W2039049904 date "2011-04-01" @default.
• W2039049904 modified "2023-10-18" @default.
• W2039049904 title "Preparation of chitin butyrate by using phosphoryl mixed anhydride system" @default.
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• W2039049904 doi "https://doi.org/10.1016/j.carres.2011.01.033" @default.
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