PEG

Carboxy-PEG4-phosphonic acid is a PEG linker with a carboxylic acid and phosphonic acid ends groups. The 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 chain increases the water solubility of the compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-N-Amido-PEG2-Ms is a PEG linker that contains a Boc protecting group and a mesyl group. The t-Boc group can be removed under acidic conditions. The mesyl group is a good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases the water solubility of the compound. Longer PEG chains increase the water solubility properties of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Mal-PEG2-NH-Boc is a PEG linker containing a maleimide group and a Boc protected amine group. The hydrophilic PEG spacer increases solubility in aqueous media. The protected amine can be deprotected under acidic conditions. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

NH-bis(PEG3-OH) is a mall PEG molecule with a central amino group and two terminal hydroxyl groups. The amino group is reactive with activated NHS esters to form a stable amide bond. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Tos-PEG9-t-butyl ester is a PEG linker containing a t-butyl ester and a tosyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The tosyl group is a very good leaving group for nucleophilic substitution reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Tos-PEG21-Tos is a PEG linker containing two tosyl groups. The hydrophilic PEG spacer increases solubility in aqueous media. The tosyl group is a very good leaving group for nucleophilic substitution reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Methyltetrazine-amido-N-bis(PEG4-acid) is a PEG derivative that contains a methyltetrazine group and two acid groups. This reagent can react with TCO-containing compounds to form a stable covalent bond without the catalysis of Cu or elevated temperatures. The inverse-electron demand Diels-Alder cycloaddition reaction of TCO with tetrazines is the fastest bioorthogonal reaction with exceptional selectivity. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. PEG linker increases the water solubility of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Mal-PEG8-NHS ester is a PEG linker containing a maleimide group and an NHS ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

PEG2000 is a linear PEG polymer for many derivatizations or formulations. Reagent grade, for research purpose.