Relative abundances (%) of di- and triterpenoids identified in commercial specimens of Boswellia resins.

Legend: - = not detected, ce = co-eluting compound which could not be resolved with mass spectral deconvolution, tr = trace, italic numbers are deconvoluted compounds. Structure types: C = cembrane, O = oleanane, U = ursane, L = lupane, T = tirucallane. Major diterpenoid and triterpenoid structures are depicted in figure S1.aCalculated using epi-amyrins, boswellic acids and 3-O-acetyl-boswellic acids.Relative abundances (%) of di- and triterpenoids identified in commercial specimens of Boswellia resins.