$100.00 – $330.00
m-dPEG®4-NHS ester, product number 10211, is a short, methyl-terminated, discrete length polyethylene glycol (dPEG®) spacer. It is designed for modification of surfaces containing accessible free amines. From the methyl cap to the carbonyl carbon, the dPEG® spacer length is 14 atoms long (15.6 Å). The carboxyl terminus of the molecule is activated with N-hydroxysuccinimide (NHS). NHS reacts optimally with free amines at pH 7.2 – 7.5. Hydrolysis of the active ester to the carboxylic acid accelerates with increasing pH. Please note that modification of surface amines on biomolecules (e.g., proteins and peptides) with this uncharged, methyl-capped dPEG® spacer may alter the overall charge of the resulting conjugates.
|Dimensions||.75 × .75 × 2 in|