The scientist we are looking for this time studied under two Chemistry Nobel Laureates—one who worked, e.g., on organic dyes, and one who worked on sugars and purines, among many other topics. Our chemist developed reactions for the synthesis of, e.g., pyrroles and quinolines, as well as a pyrazolone-based painkiller.

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• The Guess the Chemist answer was published on June 4, 2021.
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