Quaternary Salts of Chitosan: History, Antimicrobial Features, and Prospects
Figure 3
Typical solid state CP-MAS 13C NMR spectrum of TMC. The labels stand for 1u: C1 (amino unsubstituted); 1s : C1 (amino substituted); O : O-methylated; T : N,N,N-trimethylated; D : N,N-dimethylated M : N-monomethylated signals.
