PCL-PEGs Hydrazides (HZ) PLA-PEGs Poly(L-Aspartic acid)-PEGs DBCO Homobifunctional PEGs Linear Monofunctional PEGs Nitrophenyl carbonate (NPC) Functional Poly(L-Glutamic acid) DSPE-PEGs Acrylates (ACRL) Thiol (SH) Carboxylic acids (COOH) Monomers Alkyne (ALK) Hydroxyl (OH) Lipids Azide (N3) Heterobifunctional PEGs Polyesters Silanes PLGA-PEGs Active esters (SAS, SC, SCM, SG) Epoxides (EPOX) Functional Poly(L-Lysine) Protected amines (Fmoc, tBOC) Fatty acid-PEGs Vinylsulfone (VS) Folic acid (Fol) Biotins (BIO) Amines (NH2) Maleimide (MAL) Anticancer Reagents and APIs Cholesterol-PEGs Poly(L-Lysine)-PEGs Orthopyridyl disulfide (OPSS) Poly(L-Ornithine)-PEGs Sulfonate (tosyl, mesyl)