This tool supports interactive exploration of the metabolic network around a set of connected compounds of interest. Enter a starting metabolite to see a list of its possible precursor and successor metabolites (due to reactions that are reversible or of unknown directionality, the same metabolite could show up in both lists). Select a precursor or successor metabolite to build a path, and continue exploration from the selected metabolite. You can change the selected metabolite at any point along the path. Use the controls at right to control how much detail to show. Only one linear segment can be displayed at a time, but previously viewed paths are listed in the panel at right, and you can switch back and forth as desired.