Polyethylene Glycol (PEGs & PEOs)

Bis-Sulfone-PEG8-acid is a PEG derivative with a sulfone and acid end group. The sulfone group can be conjugated with thiol groups of proteins. The terminal carboxylic acid can be reacted with primary amines in the presence of activators such as EDC

Bis-sulfone-PEG8-NHS Ester is a bis-alkylating labeling reagent that is selective for the cysteine sulfur atoms from a native disulfide. These reagents undergo bis-alkylation to conjugate both thiols derived from the two cysteine residues of a

Bis-sulfone-PEG8-NHS Ester is a bis-alkylating labeling reagent that is selective for the cysteine sulfur atoms from a native disulfide. These reagents undergo bis-alkylation to conjugate both thiols derived from the two cysteine residues of a

Bis-sulfone-PEG8-NHS Ester is a bis-alkylating labeling reagent that is selective for the cysteine sulfur atoms from a native disulfide. These reagents undergo bis-alkylation to conjugate both thiols derived from the two cysteine residues of a

Bis-Tos-(2-hydroxyethyl disulfide) contains a cleavable disulfide bond and two tosyl moieties. Tosyl is an acid labile, alcohol protecting group and is also a good leaving group. The disulfide bond can be cleaved via reduction reactions.

Bis-Tos-(2-hydroxyethyl disulfide) contains a cleavable disulfide bond and two tosyl moieties. Tosyl is an acid labile, alcohol protecting group and is also a good leaving group. The disulfide bond can be cleaved via reduction reactions.

Bis-Tos-(2-hydroxyethyl disulfide) contains a cleavable disulfide bond and two tosyl moieties. Tosyl is an acid labile, alcohol protecting group and is also a good leaving group. The disulfide bond can be cleaved via reduction reactions.

Boc-aminooxy-ethyl-SS-propanol contains a Boc protected aminooxy group, a cleavable disulfide bond and a hydroxyl group. The protected aminooxy can be deprotected under mild acidic conditions and can then be reacted with an aldehyde or ketone group

Boc-aminooxy-ethyl-SS-propanol contains a Boc protected aminooxy group, a cleavable disulfide bond and a hydroxyl group. The protected aminooxy can be deprotected under mild acidic conditions and can then be reacted with an aldehyde or ketone group

Boc-Gly-amido-(CH2)3-PEG3-(CH2)3-amine is a PEG derivative containing an amino group and Boc-protected amino group. The hydrophilic PEG spacer increases solubility in aqueous media. The amino group is reactive with carboxylic acids, activated NHS

Boc-Gly-amido-(CH2)3-PEG3-(CH2)3-amine is a PEG derivative containing an amino group and Boc-protected amino group. The hydrophilic PEG spacer increases solubility in aqueous media. The amino group is reactive with carboxylic acids, activated NHS

Boc-Gly-amido-(CH2)3-PEG3-(CH2)3-amine is a PEG derivative containing an amino group and Boc-protected amino group. The hydrophilic PEG spacer increases solubility in aqueous media. The amino group is reactive with carboxylic acids, activated NHS