mPEG-OTs

Methoxy-poly(ethylene glycol)-p-toluenesulfonate (mPEG-OTs) is a monofunctional precision PEG derivative with a defined chain length. One end bears a methoxy group. The other end bears a tosylate group. Discrete chain lengths with different degrees of polymerization are available. The tosylate acts as a leaving group, enabling nitrogen- or sulfur-containing functional moieties to be introduced by nucleophilic substitution. Capping one end defines the direction of derivatization, enabling the hydrophilic PEG segment to be attached to a target molecule and functional linkers of the required length to be constructed.

Customization available.