PEG

Hydroxy-PEG2-acid sodium salt is a PEG linker containing a hydroxyl group with a terminal carboxylic acid (as sodium salt form). The free acid form is not stable due to the reaction of OH with PEG-COOH group to form polymer. The sodium salt form is stable for storage and shipping. 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. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Fmoc-aminooxy-PEG4-acid is a PEG linker with aminooxy group protected by Fmoc. 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. The hydrophilic PEG spacer increases solubility in aqueous media. The Fmoc group can be deprotected under basic condition to obtain the free amine which can be used for further conjugations. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Tos-PEG22-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.

Azido-PEG7-azide is a homobifunctional PEG reagent with two azide (N3) group. The hydrophilic 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. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-aminooxy-PEG4-propargyl is a click chemistry tool containing a propargyl group and t-Boc-aminooxy group. Propargyl group is reactive with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry to yield a stable triazole linkage. T-Boc-aminooxy can be deprotected under mild acidic conditions and then can react with an aldehyde or ketone group to form a linkage. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Aminooxy-PEG3-bromide HCl salt is a PEG linker containing an aminooxy group and a bromide group. The hydrophilic PEG spacer increases solubility in aqueous media. The aminooxy group can be used in bioconjugation. It reacts with an aldehyde to form an oxime bond. If a reductant is used, it will form a hydroxylamine linkage. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries. Aminooxy compounds are very reactive and sensitive; they cannot be stored for long term. Immediate use (within 1 week) is highly recommended.

t-Boc-Aminooxy-PEG3-thiol is a crosslinker containing a t-Boc-aminooxy group and a thiol group. The thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, The protected aminoxy can be deprotected under mild acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-Aminooxy-PEG3-bromide is a crosslinker containing a t-Boc-aminooxy group and a bromide (Br). The bromide (Br) is a very good leaving group for nucleophilic substitution reactions.Thet-Boc- aminoxy can be deprotected under mild acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-Aminooxy-PEG3-S-Ac is a hydrophilic PEG moiety containing a t-Boc aminooxy group and a sulfur acetyl group. The t-Boc group is acid labile. The sulfur acetyl group can be deprotected to generate a thiol compound. The PEG linker increases the water solubility of the compound in aqueous environments. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.