1-(9H-Fluoren-9-ylmethyl) 5,8,11,14,17,20,23,26-octaoxa-2-azanonacosanedioate

Pharmaceutical intermediate for PEGylation

(Fmoc-amino)-PEG6-carboxylic Acid

PEG-based intermediate for conjugation

(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-6-(1,3-dioxoisoindolin-2-yl)hexanoic acid

Fmoc-protected amino acid building block

Fmoc-4-(tert-butoxycarbonylmethoxy)-L-phenylalanine

Fmoc-protected amino acid building block

(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(6-methoxypyridin-3-yl)propanoic acid

Fmoc-protected amino acid building block

(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-methoxy-2-methylphenyl)propanoic acid

Fmoc-protected amino acid building block