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[TECHNOLOGY] · France, Japan, Sweden · 100 sources

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Henri Kagan and Kenso Soai win 2026 Nobel Prize in Chemistry

The Royal Swedish Academy of Sciences has awarded the 2026 Nobel Prize in Chemistry to French scientist Henri B. Kagan and Japanese scientist Kenso Soai. The laureates are recognized for their discoveries regarding nonlinear effects and autocatalysis in asymmetric organic synthesis.

Their research addresses the long-standing mystery of homochirality—the phenomenon where living organisms exclusively use one of two possible mirror-image forms of molecules, such as amino acids or sugars. While many chemical reactions typically produce equal amounts of both mirror-image forms, the work of Kagan and Soai provided methods to selectively drive reactions toward a single desired shape.

Kagan’s foundational work in the 1980s demonstrated how to manipulate reactions to create an excess of one molecular image. Soai advanced this field in the 1990s by describing autocatalytic reactions where the product helps catalyze its own formation, amplifying the initial preference. These breakthroughs are critical for the pharmaceutical industry, as different mirror-image versions of a drug can have vastly different biological effects, ranging from therapeutic to harmful.

Entities

Henri B. Kagan · Kenso Soai · Nobel Prize · Royal Swedish Academy of Sciences · Tokyo University of Science · Universite Paris-Sud · University of Paris-Saclay · University of Paris-Sud

Claims

What the coverage asserts, and how many sources carry each claim.

  • [○ 1 SOURCE] Kenso Soai is 95 years old and affiliated with the Tokyo University of Science.
  • [● 2 SOURCES] Henri B. Kagan and Kenso Soai won the Nobel Prize in chemistry.
  • [○ 1 SOURCE] Henri B. Kagan is affiliated with Universite Paris-Sud in France.
  • [○ 1 SOURCE] The award recognizes the discovery of non-linear effects and autocatalysis in asymmetric organic synthesis.
  • [○ 1 SOURCE] The Nobel Prize money this year is 12 million Swedish kronor, approximately 1.2 million USD.

Sources

C'est quoi, le prix Nobel ? [www.1jour1actu.com]
Nobel Prize in Chemistry 2026 [www.nobelprize.org]