{2-[2-(2-amino-ethoxy)-ethoxy]-ethyl}-carbamic acid benzyl ester

2-(2-{2-[2-(benzyloxycarbonylamino)ethoxy]ethoxy}ethylamino)ethyl 2-O-(2-acetamido-3,4,6-tri-O-benzyl-2-deoxy-β-D-glucopyranosyl)-3-O-carbamoyl-α-D-galactopyranosiduronamide

N-[2-[2-[2-[(2,2-dimethyl-1-phenylpropoxy)carbonylamino]ethoxy]ethoxy]ethyl]carbamate

(tert-Butoxycarbonylmethyl-{2-[2-(2-henicosa-8,10-diynoylamino-ethoxy)-ethoxy]-ethyl}-amino)-acetic acid tert-butyl ester

tert-butyl 2-(2-(2-(2-aminoethoxy)ethoxy)ethyl)((tert-butyloxycarbonyl)methylamino)acetate

{({2-[2-(2-Amino-ethoxy)-ethoxy]-ethylcarbamoyl}-methyl)-[2-(bis-ethoxycarbonylmethyl-amino)-ethyl]-amino}-acetic acid ethyl ester