[P-173] Effect of α-Methyl-Cysteine in Peptide Diketopiperazine Thioester Synthesis *Genki Nakamura1, Koki Nakatsu1, Gosuke Hayashi1, Hiroshi Murakami1 (1. Nagoya university) Abstract password authentication.Password is required to view the abstract. Please enter a password to authenticate. Password Authentication