PEG

t-Boc-N-amido-PEG5-NHS ester is a PEG linker containing an NHS ester and a Boc-protected amino group. The hydrophilic PEG spacer increases solubility in aqueous media. The Boc group can be deprotected under mild acidic conditions to form the free amine. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azide-PEG12-Tos is a monodisperse PEG reagent containing an azide group and a tosyl group. Long PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The tosyl group is a good leaving group for nucleophilic reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

THP-PEG8 is a PEG linker with a THP protecting group. The THP is an alcohol protecting group that can be removed under acidic conditions. The hydrophilic PEG linker increases the water solubility of the compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

THP-PEG7-Tos is a PEG linker with a THP protecting group and a tosyl moiety. The THP is an alcohol protecting group that can be removed under acidic conditions. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG linker increases the water solubility of the compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

m-PEG3-S-PEG1-t-butyl ester is a PEG linker containing a t-butyl protected carboxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group (COOH) prevents self-coupling or polymerization under standard acid/amine or acid/hydroxyl coupling conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

tert-butyl bis(2-hydroxyethyl)carbamate is a branched PEG with a tert-butyl protecting group and two hydroxyl end groups. The t-butyl group can be deprotected under acidic conditions. The hydroxyl group can react to further derivatize the compound. The hydrophilic PEG linker increases the water solubility of the compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

NH-bis(PEG2-OH) is a small pEG reagent that can be used to conjugate with carboxylic acid in the presence of HATU or EDC Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Acid-PEG5-TEMPO is a PEG linker with a terminal carboxylic acid and TEMPO moiety. The terminal carboxylic acid can react with primary amines in the presence of activators such as EDC and HATU to form stable amide bonds. The hydrophilic PEG linker increases the water solubility of the compound. TEMPO is a stable radical with applications in chemistry and biochemistry. It is used as a radical marker, a structural probe for biological systems in conjunction with electron spin resonance spectroscopy, a reagent in organic synthesis, and as a mediator in controlled radical polymerization. It is commonly used as a catalyst in organic chemistry synthesis for the oxidation of primary alcohols to aldehydes. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG3-phosphonic acid ethyl ester is a PEG linker containing an azide group and a terminal phosphonic acid ethyl ester. The azide group enables Click Chemistry. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.