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Product details
Catalog number 135000-44-35.1G
Price for 135000-44-35.1G
Size / count 1 g
Orthopyridyl disulfide (OPSS) PEGs are thiol-specific PEGylation reagents that react with free sulfhydryls (-SH) at a wide pH range (pH 3-10) through disulfide exchange. The newly formed disulfide (S-S) bond is unstable in a reducing environment. Thus, the bond can be cleaved to reverse the pegylation and release free thiols. PEG-NHS ester derivatives are active esters and useful reagents to pegylate proteines, peptides or any other surfaces with a free primary amino group to form stable amide bonds. The Reaction requires a neutral to alkaline pH (7 to 8.5) to proceed. However, hydrolysis competes with aminolysis of the active ester and also increases with higher pH. Thus, working with excess PEG-NHS ester is necessary to obtain high pegylation yields. The PEG butyric acid NHS ester derivative has a C4 chain directly attached to PEG. It is one of the most stable PEG NHS esters known with a hydrolysis half-life of over 20 min at pH 8.
The catalog number for Ɑ-Butyric Acid NHS Ester-ω-Pyridyldithiopropanamido PEG is 135000-44-35.1G.
Ɑ-Butyric Acid NHS Ester-ω-Pyridyldithiopropanamido PEG is available in the following size(s): 1 g.
Ɑ-Butyric Acid NHS Ester-ω-Pyridyldithiopropanamido PEG is currently made to order / not held in immediate stock. Contact us for lead time.
Orthopyridyl disulfide (OPSS) PEGs are thiol-specific PEGylation reagents that react with free sulfhydryls (-SH) at a wide pH range (pH 3-10) through disulfide exchange. The newly formed disulfide (S-S) bond is unstable in a reducing environment. Thus, the bond can be cleaved to reverse the pegylati
Lead times depend on the product type: custom polyclonal antibodies typically take 12-14 weeks, monoclonal antibodies 15-17 weeks, made-to-order recombinant proteins 4-8 weeks, and made-to-order recombinant antibodies 6-8 weeks. These are estimates and may shift due to production delays.
A recommended dilution range for each validated application is provided on the datasheet, but optimal dilution should be titrated for your specific experimental system, sample type, and detection method.
Post-reconstitution storage guidance is listed on the datasheet, typically requiring aliquoting and storage at -20°C or -80°C to preserve activity.
