PCL(2k)-PEG(5k)-FITC is a biocompatible and biodegradable amphiphilic polymer with green fluorescent dye 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 drug delivery. Reagent grade, for research purpose.