(S,S,S,S,R)-Boc-Dap-NE is the inactive isomer of Boc-Dap-NE , and can be used as an experimental control. Boc-Dap-NE , is an intermediate in the synthesis of Monomethyl auristatin E , which is an inhibitor of tubulin polymerization. Monomethyl auristatin E can be used to synthesize Antibody-Drug Conjugates (ADCs) as ADC Cytotoxin.