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Product details
Catalog number 1310000-44-35.500MG
Price for 1310000-44-35.500MG
Size / count 500 mg
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 1310000-44-35.500MG.
Ɑ-Butyric Acid NHS Ester-ω-Pyridyldithiopropanamido PEG is available in the following size(s): 500 mg.
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
Some products, including certain cell lines and biologics, require dry ice for transportation, which carries an additional fee shown clearly in your quotation. Dry ice delivery isn’t always possible to every destination due to transit time or local restrictions, so we check feasibility in advance and you must store the goods at the correct temperature the moment they arrive.
Cross-reactivity data, based on available testing, is listed under the reactivity section of the datasheet. Contact us if you need reactivity confirmed for a species not listed.
Yes, if this product requires dry ice or is classed as hazardous for transport, the additional fee will be explicitly shown in your quotation before you confirm the order, so there are no surprise charges later.
