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. 2018 Sep 21;9:1025. doi: 10.3389/fphar.2018.01025

Figure 1.

Figure 1

1H NMR spectrum of (A) N-hydroxysuccinimide ester, and (B) N-palmitoyl chitosan. All of the samples were dissolved formic acid-d2 (95% w/w in D2O).