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Table 1 Molecular weight parameters of 13C-labeled and unlabeled β-O-4 lignin oligomer model compounds

From: NMR elucidation of nonproductive binding sites of lignin models with carbohydrate-binding module of cellobiohydrolase I

Lignin models Chain length Mn Mw Mw/Mn DPa
Compound 4(Arβ) (13C-labeled aromatic rings and β positions) Long 843 923 1.095 4.70
Short 480 520 1.083 2.64
Compound 4(α) (13C-labeled α positions) Long 750 918 1.224 4.67
Short 531 614 1.156 3.12
Compound 4(m) (13C-labeled methoxy groups) Long 629 818 1.301 4.16
Short 482 587 1.218 2.98
Compound 4 (unlabeled) Long 882 964 1.092 4.91
Short 552 560 1.014 2.85
  1. aDP Degree of polymerization calculated from the Mw and theoretical molecular mass of the lignin model