Structure of poly(lactic-co-glycolic acid). x= number of units of lactic acid; y= number of units of glycolic acid.<unk> , PLG, or poly(lactic-co-glycolic acid) is a copolymer which is used in a host of Food and Drug Administration (FDA) approved therapeutic devices, owing to its biodegradability and biocompatibility.<unk>  is synthesized by means of ring-opening co-polymerization of two different monomers, the cyclic dimers (1,4-dioxane-2,5-diones) of glycolic acid and lactic acid. Polymers can be synthesized as either random or block copolymers thereby imparting additional polymer properties. Common catalysts used in the preparation of this polymer include tin(II) 2-ethylhexanoate, tin(II) alkoxides, or aluminum isopropoxide. During polymerization, successive monomeric units (of glycolic or lactic acid) are linked together in<unk>  by ester linkages, thus yielding a linear, aliphatic polyester as a product.
PLGA
Cochrane 
Cochrane
TCP 
Covid-Organics
NOMESCO
AMELY
Spirolactone