80 Synthesis of benzyloxycarbonylglycylglycine-phenylalanine p -nitroanilide and an evaluation of its potential as a substrate for ∂-chymotrypsin and subtilisin B PN'. (February 1998) - O'Sullivan, Denis B.; Murphy, Evelyn; O'Connell, Timothy P.; Murphy, Elaine A.; Malthouse, J. Paul G.