Figure 5.
Decrease of absorbance at 540 nm of tetrazines 2a,c–n in 1:9 DMSO/PBS (pH = 7.4) at 37 °C. The normalized mean with SD is plotted. [a] Measured in 1:1 DMSO/PBS (pH = 7.4) as tetrazines 2d and 2m were insoluble in 1:9 DMSO/PBS.
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