PEG

Acid-PEG8-t-butyl ester is a bifunctional PEG linker with a carboxylic acid and a t-butyl ester. Carboxylic acids can be conjugated with alcohols or amines while the t-butyl ester can be hydrolyzed under acidic conditions.

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a short (2 PEG) spacer arm. Requires a crosslinker such as EDC.

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a short (2 PEG) spacer arm. Requires a crosslinker such as EDC.

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a short (2 PEG) spacer arm. Requires a crosslinker such as EDC.

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a 3 PEG spacer arm. Requires the use of a crosslinker (e.g. EDC or DCC).

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a 3 PEG spacer arm. Requires the use of a crosslinker (e.g. EDC or DCC).

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a long (7 PEG) spacer arm. Requires a crosslinker such as EDC. Spacer length 25 atoms or 29.8 A

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a long (7 PEG) spacer arm. Requires a crosslinker such as EDC. Spacer length 25 atoms or 29.8 A

Biotinylation reagent that binds the C-terminus of peptides and carboxylic acid groups on aspartate or glutamate residues. Contains a very long (11 PEG) spacer arm. Requires a crosslinker such as EDC.