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m-PEG8-aldehyde is an monodisperse PEG linker that is reactive to hydrazide and aminooxy groups which are commonly used in biomolecular probes for labeling and crosslinking carbonyls (oxidized carbohydrates). PEG8 spacer increases solubility in aqueous media.

M-PEG8-ALDEHYDE, consist of a methoxy-terminated, single molecular weight dPEG? molecule functionalized with a propionaldehyde group. The propionaldehyde moiety can be conjugated stably to amines, hydroxylamines, hydrazines, hydrazides, and other groups