In the race to create more potent and stable medicines, scientists know that adding fluorine can improve drug molecules. However, there is only one fluorination reaction known to occur in nature. And this process is performed by complex and highly specialized enzymes that are difficult to replicate. Now, scientists have developed a new, streamlined molecule that can do the work of enzymes but be designed and controlled minutely. This new catalyst transforms a safe, affordable fluoride salt into fluorinated organic molecules.