https://scholar.google.com/scholar?hl=en&as_sdt=0%2C22&q=Nanocs+PEG&btnG=Description:

Boc-NH-PEG-NH2 (Boc PEG amine) is one of Nanocs' heterobifunctional PEG derivative that can be used to modify proteins, peptides and other materials via amino or other acid reactive chemical groups. t-Boc protect group in this Boc-PEG-amine compound can be easily deprotected under acidic condition to release free amine for further reaction.

Physical Properties:

• Off-white/white solid or viscous liquid depends on molecule weight;
• Soluble in regular aqeous solution as well as most organic solvents;

Storage Conditions:

• Store at 4 ⁰C or lower.

References:

Click here to see hundreds of publications from Nanocs PEGs.