Welcome to Iris Biotech
For better service please confirm your country and language we detected.
Poly-Arginines (PARs) are a class of poly(amino acids) that are a valuable alternative to PEG. Unlike PEGs, polyarginines are biocompatible and biodegradable, so they don’t accumulate in the body or cause an immune response, which is a known issue with larger PEGs. PARs can be used as carriers for pharmaceuticals, or for the multivalent presentation of molecules.