Protoalkaloids, which can promote weight loss, can be found in bitter oranges. Shown below is the chromatogram of a standard mixture of 6 protoalkaloids. The peaks can be identified as (1) octopamine, (2) synephrine, (3) tyramine, (4) phenylephrine, (5) N-methyltyramine, (6) hordenine. If a dietary supplement claiming to contain bitter oranges was analyzed through the same method and the results showed that it contains the compound Tyramine only, where would you expect the peak to show up?
