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. Author manuscript; available in PMC: 2017 Jul 12.
Published in final edited form as: Org Lett. 2010 May 21;12(10):2398–2401. doi: 10.1021/ol100774p

Figure 2.

Figure 2

Radio-HPLC trace of 68Ga–biotin–DOTA reaction mixtures. Top: 68Ga labeling in the presence of 5 μmol of 14. Bottom: 68Ga labeling in the presence of 5 nmol of 14. Peak labeling: (1) “free” 68Ga; (2) 68Ga–14 complex as a mixture of two regioisomers; (3) unknown trace impurity.