Table 2.

Proton and carbon hemical shifts of chitosan based on Lavertu et al. [107] and Vårum et al. [72].

Specie	Nucleus	Chemical Shift (ppm)
HAc	1H	2.36
H2D	1H	3.52
H2A, H3, H4, H5, H6	1H	3.9–4.2
H1A	1H	4.92
H1D	1H	5.21
C1A	13C	103
C1D	13C	100
C2	13C	58
C3	13C	73–75
C4	13C	80–82
C5	13C	77
C6	13C	63
C acetyl	13C	25