γ‐Glutamyltranspeptidase (GGT)‐Activatable Fluorescence Probe for Durable Tumor Imaging
We designed 4-CH2F-HMDiEtR-gGlu as a fluorogenic probe for GGT. The enzyme hydrolyzes the probe to afford an azaquinone methide intermediate, which is trapped by intracellular nucleophiles, enabling...