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. 2021 Mar 4;11(11):3417–3432. doi: 10.1016/j.apsb.2021.02.023

Figure 3.

Figure 3

Structures defined in public filters that are not generally recognized as PAINS. Compounds such as 3 and 5 could not be considered useful or progressable and should be excluded from screening libraries. Compound 5 should be redox active and is not unexpected considering its similarity to the isoalloxazine ring of flavins (6 and 7)48,49.