GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY
Development of a chemotherapy agent, a drug used in the treatment of cancer. Reactions in synthetic organic chemistry often practically proceed in steps, through the production of intermediate compounds. Here, the chemist is measuring the volume of hydrogen absorbed during the hydrogenation of a nitro- compound, a stage in the synthesis of a product aimed at overcoming resistance to chemotherapy. Photographed in France.
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