PCL(1k)-PEG(1k)-FITC is an amphipathic block copolymer with green fluorescent probe for staining cells, tissues, biomarkers or nanoparticles. FITC has peak absorption or excitation at 494 nm and maximum emission at 521 nm. The molecule can form micelles spontaneously in water. It can be used to prepare nanocarrier for delivering therapeutic agents. Reagent grade, for research purpose.