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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: Bioorg Med Chem Lett. 2015 Oct 23;25(23):5532–5535. doi: 10.1016/j.bmcl.2015.10.059

Table 2.

Apparent affinities of pawhuskin A (1), 3 and 4.

apparent affinity (Ke) of antagonists in μM
Compound DOP KOP MOP
1 2.9 0.2 570
3 >10 0.15 >10
4 0.025 >10 >10