N--2-oxoethyl)-DL-homocysteinyl>glycine

(6-aminohexyl) β-glycoside of N-acetylmuramyl-L-alanyl-D-isoglutamine

ethyl N--2-oxo-ethyl)-DL-homocysteinyl>glycinate

6-(benzyloxycarbonylamino)hexyl 2-acetamido-4,6-O-benzylidene-3-O-(D-1-carboxyethyl)-2-deoxy-β-D-glucopyranoside

N-benzyloxycarbonyl-6-aminohexyl-N-acetyl-2-amino-2-deoxy-4,6-O-benzylidene-β-D-glucopyranoside