Figure 3From: Identification of metabolites from 2D 1H-13C HSQC NMR using peak correlation plotsHSQC correlation plot of phenylacetylglutamine. Correlation plot showing all data points correlating strongly with 7.41 / 131.5 ppm (1H / 13C) (correlation coefficient higher than 0.8). Correlation to long-range cross-peak is circled. Two cross-peaks are marked with “7” due to diastereotopic protons in this position.Back to article page