PRMT5-targeted fluorescent ligand-1 (Compound 7) is a PRMT5 -targeted fluorescent ligand, that inhibits PRMT5 with an IC 50 of 29.39 nM. PRMT5-targeted fluorescent ligand-1 exhibits cell imaging activity, that exhibits good fluorescence signal in MCF-7 with an IC 50 of 29 nM. PRMT5-targeted fluorescent ligand-1 induces apoptosis. PRMT5-targeted fluorescent ligand-1 exhibits a maximal excitation wavelength of 438 nm and a maximal emission wavelength of 550 nm.