Fig. 3. Assignment of the 2D HSQC NMR spectrum of the crude pine RCF oil. The figure links the native inter-unit linkages (green background) with their corresponding RCF products during reductive catalytic fractionation of the wood (for conditions, see Experimental in ESI†). Fig. S7–S14 (provided in the ESI†) reveal all details to support the assignments. ^a Relative quantification vs. G₂ area, the spectra were processed in triplicate, more information can be found in Tables S5 and S6.†.