Catherine Rougeot, an Institut Pasteur guest researcher, was recognized by the Institut Pasteur in 2017 for her work in discovering a non-opioid analgesic, today called STR-324. She was appointed member of the National Academy of Inventors in the US on receiving this award. As the Institut Pasteur is celebrating its 130th anniversary this year – November 14, 2018 – let's look back at the discovery of this molecule, which is entering phase I clinical trials this month.