N-(2-hydroxypropyl)methacrylamide (HPMA) is an important hydrophilic monomer. Due to the non-toxic, non-immunogenic properties and prolonged circulation time of both its homopolymers and copolymers, it is widely employed in the preparation of PHPMA copolymers (a polymer-drug conjugate) for use in the biopharmaceutical industry. For instance, poly(HPMA-co-MA-GFLG-doxorubicin) represents the first intravenous tumour-targeting polymeric prodrug to enter clinical trials. HPMA polymers and copolymers are also employed in the fabrication of biocompatible medical materials such as hydrogels[1].