Our CELT-335 product is a potent and selective hCB1/CB2 fluorescent ligand that shows a high affinity for CB1/CB2 receptors. It has a Ki value of 44.8 nM and 7.4 nM, respectively, in radioligand binding assay. CELT-335 has been validated in high-content screening assays and is also suitable for HTRF binding assays, providing a valid alternative to radioligand binding assays. It is available in a 10ug vial that allows for the preparation of 150ml of 100nM working solution to test CB1R/CB2R. CELT-335 is designed to allow for cell visualization in fluorescence microscopy and is potentially suitable for other fluorescence-based assays.