Figure 3 | Scientific Reports

Figure 3

From: Quality-by-design ecofriendly potentiometric sensor for rapid monitoring of hydroxychloroquine purity in the presence of toxic impurities

Figure 3

Three-dimensional structures of (a) the hydrophobic interaction of β-cyclodextrin with HCQ and (b) the hydrophobic interaction of calix[8]arene with HCQ. HCQ appeared as thick blue sticks surrounded by an ionophore represented by thin sticks. The dotted red lines in (a) show the H-bonding, and the dotted green lines in (b) represent the H-pi bond interactions.

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