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. Author manuscript; available in PMC: 2017 Jul 19.
Published in final edited form as: J Labelled Comp Radiopharm. 2016 Jul 29;59(11):439–450. doi: 10.1002/jlcr.3430

FIGURE 1.

FIGURE 1

Synthesis of the DCFPyL precursor, 5-(((S)-6-(tert-butoxy)-5-(3-((S)-1,5-di-tert-butoxy-1,5-dioxopentan-2-yl)ureido)-6-oxohexyl)carbamoyl)-N, N,N-trimethylpyridin-2-aminium trifluoromethanesulfonate (3)