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The GC-MS Identification of the main dimcrs rccovcrcd aftcr thioacidolysis, thcn dcsulphuration ovcr Rancy nickcl of sprucc lignin allowcd to charactcrizc the vurious typcs of Condensed linkagcs in softwood lignin. The major carbon-carbon bonds wcrc obscrvcd to bc rcprcscnted by the ß-5, 5-5 and ß-1 intcrunitary linkagcs cstablishcd bctwccn two guaiacyl units, in agrccmcnt with litcraturc data. Bcsidcs, minor linkagc patterns wcre rcprcscnted by dimcrs providcd with the diphcnyl cthcr, the phcnylisochroman and the tctrahydrofuran structurcs. This fingcrprint of Condensed structurcs in softwood iignin was obtaincd from a fcw milligrarns of sample, by mcans of a rcproduciblc and mild routinc proccdurc.