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Table 6 QM-based pKa values for Cation A

From: Molecular docking assisted exploration on solubilization of poorly soluble drug remdesivir in sulfobutyl ether-tycyclodextrin

QM methods

pKa

(M06-2x/6-311G**)

-1.7

(M06-2x/6-311G**) with water

4.6

(RI-PWPB95-D3(BJ)/def2-QZVPP)

1.2

(RI-PWPB95-D3(BJ)/def2-QZVPP) with water

5.0

COSMO-RS

3.4

Experimental (Gilead)

3.3