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. 2017 Apr 27;12(4):e0175225. doi: 10.1371/journal.pone.0175225

Table 3. NMR based assessment of K2T23 keto-enolic equilibrium.

Solvent fDK
d12-cyclohexane 0.508
d3-chloroform 0.395
d2-Dichloromethane 0.396
d3-Acetonitrile 0.615
d6-Dimethylsulfoxide 0.481
d4-Methanol 0.470

Fraction of K2T23 in the diketo conformers in selected solvents as evaluated by NMR.