Figure 3.
Recrystallization diagram of PYX in different solvent systems. (a) NMP—ethanol. (b) NMP—n-hexane. (c) NMP—acetonitrile. (d) NMP—ethyl acetate. (e) NMP—dichloromethane. (f) DMF—acetonitrile. (g) DMF—ethanol. (h) DMF—dichloromethane.
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