2026 Nobel Prize in Chemistry awarded to Henri Kagan and Kenso Soai for chiral molecule research

The 2026 Nobel Prize in Chemistry has been awarded to Henri B. Kagan and Kenso Soai for their foundational work on chirality — the property by which molecules exist as non-superimposable mirror images of one another, analogous to left and right hands. The award was announced on Wednesday 7 October 2026.

Kagan, a French chemist, made landmark contributions to asymmetric catalysis — the development of catalysts that selectively produce one mirror-image form (enantiomer) of a molecule over the other. Soai is recognised for the discovery of the Soai reaction, a striking example of asymmetric autocatalysis in which a chiral product catalyses its own production, amplifying tiny initial imbalances in chirality to near-complete enantiomeric excess.

The pharmacological relevance of chirality is substantial: many drugs are chiral molecules where one enantiomer is therapeutically active and the other may be inactive or harmful. The ability to synthesise a desired enantiomer selectively — rather than producing a racemic mixture — is central to modern pharmaceutical chemistry. The Nobel Committee cited the broad impact of the laureates' work on chemistry and pharmacology.

Neither Kagan nor Soai's work is directly within genetics or genomics, but the intersection with drug development and the pharmacogenomics of drug metabolism gives the award peripheral relevance to the Genetic Current audience.