Figure 3. Correlation of tumor-specificity (TS) and potency-selectivity expression (PSE) for diastereomer pairs from A (1-10) and B (11-20) series of compounds, plotted per pair: (1, 11), (2, 12), (3, 13), (4, 14), (5, 15), (6, 16), (7, 17), (8, 18), (9, 19) and (10, 20). Fitted curves or lines and r2 values were calculated by Microsoft Excel (Windows 10, Microsoft Corporation, Redmond, WA, USA). Correlations are shown for TS and PSE values for all oral squamous cell carcinoma (OSCC) cell lines versus non-malignant cells (left), and paired cells derived from the same (gingival) tissue (right).