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. Author manuscript; available in PMC: 2021 Oct 5.
Published in final edited form as: J Am Chem Soc. 2021 Jun 30;143(27):10429–10440. doi: 10.1021/jacs.1c05339

Table 3.

Half-lives of Ln3+−py-macrodipa and Ln3+−macrodipa Complexes when Challenged with 100 Equivalents of DTPA.a

Ln3+–py-macrodipa Ln3+–macrodipa
La3+ 6.3 ± 0.3 d 1678 ± 33 s
Nd3+ 3.9 ± 0.2 d 615 ± 14 s
Gd3+ 5524 ± 107 s 54 ± 2 s
Er3+ 578 ± 23 s; 61± 3 s 5 ± 1 s
Lu3+ 853 ± 10 s 65 ± 1 s
Sc3+ 16.6 ± 1.7 h 782 ± 18 s
a

[LnL] = 100 μM, pH 7.4, 22 °C.