One of the core aliquots (out of multiple taken for triplicate analysis as detailed in the Methods section) from the treated Mary Rose sample was noticeably different from the others (and subsequently excluded from S/G and acid-aldehyde calculations). This sample contains several compounds that appear to be from pitch pine, which is common in marine artifacts . The most abundant compounds in the thermochemolysis chromatogram are dehydroabietane and methylpimaran-18-oate. Other diterpenoid compounds identified include tetrahydroretene, simonellite, retene and dehydroabietic acid. Other compounds associated with the above diterpenoids include cadalene and 1,7-dimethylphenanthrene (for structures see Otta & Simoneitt (34)). Pitch pine has previously been positively identified from Mary Rose artefacts , and the distribution of compounds present in the sample described here is also consistent with them being from pitch pine.