Boc-Lys(Z)-OH
2-(Trimethylsilyl)ethanol
(S)-6-Benzyloxycarbonylamino-2-tert-butoxycarbonylamino-hexanoic acid 2-trimethylsilanyl-ethyl ester
toluene-4-sulfonic acid
Nα-(tert-Butyloxycarbonyl)-Nε-
Nα-(tert-Butyloxycarbonyl)-Nε-
(S)-6-Benzyloxycarbonylamino-2-((S)-6-benzyloxycarbonylamino-2-tert-butoxycarbonylamino-hexanoylamino)-hexanoic acid 2-trimethylsilanyl-ethyl ester