Ma Yong, Protection Side Chain of Lysine by Host-Affinity Molecules during Solid Phase Peptide Synthesis in Aqueous Phase, Journal of Peptides, Volume 1, Issue 1, 2024, Pages 34-42, ISSN Coming Soon, https://doi.org/. (https://jcci-clinicalarticles.infojop/article/2157) Keywords: Solid-phase peptide synthesis (SPPS); greener SPPS; protection of side chain of Lys by 18-crown-6 molecule (18C6); 18C6molecule host-guest affinity towards ε-amino group of Lys