bThe signal with the lowest 13C enrichment is referenced to 1.10% 13C cFraction of the indexed coupling pair in the overall signal intensity of the respective 13C NMR signal |
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Table 2: 13C-NMR data of thymol obtained from T. transcaucasicus flowers labelled with 13CO2 for four hours and extracted with chloroform 12 days after the labelling pulse. The solvent was CDCl3. |