Resonance isn’t just a drawing trick — it’s a core principle that explains molecular stability, acidity, and reactivity. By delocalizing electrons across atoms, molecules can lower their energy and ...

Selective Oral Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitor ZD1839 Is Generally Well-Tolerated and Has Activity in Non–Small-Cell Lung Cancer and Other Solid Tumors: Results of a Phase I ...