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keep reading — 1 min ↗The German chemist Felix Hoffmann (1868–1946) famously synthesized two drugs: aspirin, one of the most widely beneficial drugs ever, and heroin, one of the most harmful of illegal substances. These two drugs represent the efforts of late-19th-century chemists to create new substances that could be used as medicines, not just to isolate active ingredients from natural products or to imitate them. One approach toward this end…