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. 2021 Jan 13;6:3. doi: 10.1186/s41181-020-00119-4

Fig. 2.

Fig. 2

Radio-HPLC chromatogram of 64Cu labeling of (a) DOTA-1Py (retention time, tR = 12.5 min), (b) DOTA-2Py (tR = 12.7 min), (c) DOTA-3Py (tR = 14.5 min), and (d) cyclen-4Py (tR = 16.7 min) at ligand concentration 1 × 10− 3 M (100 nmol ligand, 3 MBq 64Cu) and ambient temperature