(S,R,S)-AHPC-Linker-Acid

(S,R,S)-AHPC-CO-C2-acid

(S,R,S)-AHPC-CO-C3-acid

(S,R,S)-AHPC-CO-C4-acid

(S,R,S)-AHPC-CO-C5-acid

(S,R,S)-AHPC-CO-C6-acid

(S,R,S)-AHPC-CO-C7-acid

(S,R,S)-AHPC-CO-C8-acid

(S,R,S)-AHPC-CO-C9-acid

(S,R,S)-AHPC-CO-C10-acid

(S,R,S)-AHPC-acetamido-O-C1-acid

(S,R,S)-AHPC-acetamido-O-PEG1-C1-acid

(S,R,S)-AHPC-acetamido-O-PEG2-C1-acid

(S,R,S)-AHPC-acetamido-O-PEG3-C1-acid

(S,R,S)-AHPC-acetamido-O-PEG4-C1-acid

(S,R,S)-AHPC-acetamido-O-PEG5-C1-acid

(S,R,S)-AHPC-acetamido-O-PEG6-C1-acid

(S,R,S)-AHPC-CO-PEG1-C2-acid

(S,R,S)-AHPC-CO-PEG2-C2-acid

(S,R,S)-AHPC-CO-PEG3-C2-acid

(S,R,S)-AHPC-CO-PEG4-C2-acid

(S,R,S)-AHPC-CO-PEG5-C2-acid