Figure 6From: The nature and fate of natural resins in the geosphere. Part X.† Structural characteristics of the macromolecular constituents of modern Dammar resin and Class II ambers2D 13C-1H NMR spectra for modern Dammar polymer. (a) HMQC, (b) HMBC and (c) COSY. Correlating resonances due to an isopropyl structure are indicated by dashed lines. Click on the image or here for a larger view.Back to article page