“…Thus, among others, we can see in these spectra characteristic bands at 1688, 1659 and 1639 cm −1 due to C C stretchnig vibrations originating from 3-carene, α-pinene and probably camphene, respectivety, and well-structured marker bands for these components attributed to ring deformations at 669 cm −1 for α-pinene or 717 cm −1 for 3-carene. [12,35,38,39,41] However, above all, we are able to define several characteristic key bands for BA, which do not overlap with other principal component bands of pichtae oil (Fig. S2), including those at 1736, 1049, 839, 746, 657, 642 and 591 cm −1 described earlier (text or Table 1).…”