PCL(5k)-PEG(5k)-FITC is a green fluorescein functionalized block copolymer which has hydrophobic polycaprolactone (PCL) and hydrophilic PEG block. The micelle-forming polymer can be used for drug nanocarrier formulation. The ester bonds of the polymer is biodegradable via hydrolytic attack. Reagent grade, for research purpose.