STOCKHOLM: Scientists Henri Kagan and Kenso Soai won the 2026 Nobel Prize in Chemistry for solving a long-standing riddle of how to form a single molecular mirror image, a discovery hugely important for pharmaceutical manufacturing, the award-giving body said on Wednesday. The prize recognises their work on non-linear effects and autocatalysis in asymmetric organic synthesis. Kagan works at Paris-Saclay University in France, while Soai is at the Tokyo University of Science in Japan. They will share the prize money of 12 million Swedish kronor, about $1.2 million.
Background: Why Mirror-Image Molecules Matter
Many molecules exist in two forms that are mirror images of each other, much like a left hand and a right hand. Chemists call this property chirality. The two forms have the same atoms, but they can behave very differently, especially inside the human body.
This is a major issue in drug making. One mirror-image form of a medicine may work as intended, while the other may be less effective or even harmful. For decades, chemists have tried to find reliable ways of producing only the version they want, which is the field known as asymmetric synthesis.
Details: What the Winners Discovered
According to the Nobel citation, Kagan and Soai were honoured for the discovery of non-linear effects and autocatalysis in asymmetric organic synthesis. In simple terms, their work showed new ways to steer chemical reactions so that one mirror-image form is produced far more than the other. It also helped scientists understand how tiny differences at the start of a reaction can grow into large ones.
The prize was announced on Wednesday, October 7, at the Royal Swedish Academy of Sciences in Stockholm by its secretary general, Ellen Moons. The Nobel committee said the work has been revolutionary for chemists who develop reactions for the manufacture of pharmaceuticals, flavours, scents and new materials. Kagan, who was born in France in 1930, is one of the oldest scientists to be honoured in recent years, and Soai is a leading figure in Japanese chemistry.
The announcement also came as a surprise to many observers. Chemistry World’s live coverage noted that neither name appeared on the predictions lists it had seen. Kagan had already won the Wolf Prize in Chemistry, which is often seen as a good sign of future Nobel success, as well as the Ryoji Noyori prize.
Quotes: What the Committee and Experts Said
Heiner Linke, chair of the Nobel Committee for Chemistry, said in a statement that “the chemical reactions they have developed are spectacular.” The committee explained that the discoveries opened a new way of thinking about how molecular complexity can arise.
David Pendlebury of Clarivate’s Institute for Scientific Information said the prize recognises discoveries whose influence has grown over decades. He added that the award is a reminder that major advances often come from long, curiosity-driven research, and that the full importance of basic science may take many years to be understood.
Note for the writer: if you can find a verified reaction from Kagan or Soai, or from a pharmaceutical chemist, add it here. Do not publish invented quotes.
Impact: From the Lab to the Pharmacy
The discoveries are important to the global pharmaceutical industry, where producing a drug as a single mirror-image form is often essential for safety and effectiveness. The same principles are used in the making of flavours, fragrances and advanced materials. Better control over reactions can also mean less waste and lower costs, which matters for large-scale manufacturing.
Beyond industry, Soai’s work on self-amplifying reactions has also drawn interest from scientists who study the origins of life. Living things mostly use one mirror-image form of molecules such as amino acids and sugars, and researchers have long asked how this preference began. The prize may bring more attention to that question.
For the countries involved, the award is a point of pride. It is another Nobel success for Japan, which has a long list of science laureates, and it recognises French chemistry. Many young chemists around the world are also likely to take interest in asymmetric synthesis after the award.
Conclusion: What Comes Next
The two laureates will receive their medals and diplomas at the Nobel ceremony in Stockholm in December. The announcements for the other categories continue through the Nobel season, and the full schedule is published on the official Nobel Prize website.
Last year’s Chemistry Nobel went to Susumu Kitagawa, Richard Robson and Omar Yaghi for developing metal-organic frameworks. The 2026 award continues the tradition of honouring work that has shaped science for decades, and further updates will follow from Stockholm.
Frequently Asked Questions (FAQs)
Who is predicted to win the Nobel Prize in Chemistry in 2026?
The 2026 prize has already been announced, so the winners are known: Henri Kagan and Kenso Soai. Before the announcement, however, many experts had guessed other names. Chemistry World reported that David Klenerman and Shankar Balasubramanian, who developed next-generation DNA sequencing, were among the favourites. Neither Kagan nor Soai had been mentioned in the predictions the magazine had seen, which shows how hard it is to guess the winners. Predictions are usually based on citation counts, earlier awards such as the Wolf Prize and the importance of the discovery, but the Nobel committee’s discussions are kept secret. This is why every year’s list of predicted winners is only an educated guess.
Is the Nobel Prize 2026 announced?
The Nobel Prize in Chemistry 2026 was announced on Wednesday, October 7, at the Royal Swedish Academy of Sciences in Stockholm, and the winners are Henri Kagan and Kenso Soai. The Nobel Prizes are announced over several days each October, and each category is revealed on a different day. The Nobel Foundation publishes the official schedule and the winners on its website, nobelprize.org, which is the best place to check whether a particular prize has been announced. The formal award ceremony, where the laureates receive their medals and diplomas, takes place in Stockholm in December, on the anniversary of Alfred Nobel’s death. Readers should check the official site for the dates of the Physics, Medicine, Literature, Peace and Economics announcements.
Who are the 2026 Nobel Prize nominees?
The names of nominees are not made public. The Nobel Foundation keeps all nominations and the committee’s discussions secret for 50 years, so no official list of 2026 nominees exists. This applies to all Nobel Prize categories. What people see before the announcement are predictions made by analysts, such as lists of “Citation Laureates” from Clarivate or guesses made by science journalists, which are based on influential research rather than on actual nominations. After 50 years, the Nobel archive opens the nomination records of earlier years, which is how historians learn who was nominated in the past. For 2026, the only confirmed names are those of the winners announced on Wednesday
