PEG

Biotinylation reagent with Azide, and a long 11 PEG spacer. Labels terminal alkynes via a copper-catalyzed "click reaction". Useful for labeling fluorescent dyes with triple bond alkyne groups.

Biotinylation reagent with Hydrazide, and a 3 PEG spacer. Reacts with aldehydes at pH 4 to 6. Can be used to label glycoproteins and other carbohydrate-containing compounds that have oxidizable sugars or aldehydes. Can also be used to biotinylate carboxyl groups. Popular label for antibodies, as the glycosylation sites are on the Fc region of the protein.

Biotinylation reagent with N-hydroxysuccinimide ester, and a 3 PEG spacer. The NHS group reacts with the e-amino group on lysines, the N-terminus of proteins, and other primary amines.

Biotinylation reagent with N-hydroxysuccinimide ester, and a 3 PEG spacer. The NHS group reacts with the e-amino group on lysines, the N-terminus of proteins, and other primary amines.

Biotinylation reagent with N-hydroxysuccinimide ester, and a 4 PEG spacer. The NHS group reacts with primary amines at pH 7.0-9.0. Can be used to label the e-amino group on lysines, the N-terminus of proteins, and other primary amines.

Biotinylation reagent with N-hydroxysuccinimide ester, and a 4 PEG spacer. The NHS group reacts with primary amines at pH 7.0-9.0. Can be used to label the e-amino group on lysines, the N-terminus of proteins, and other primary amines.

Biotinylation reagent with N-hydroxysuccinimide ester, and a 4 PEG spacer. The NHS group reacts with primary amines at pH 7.0-9.0. Can be used to label the e-amino group on lysines, the N-terminus of proteins, and other primary amines.

Biotinylation reagent with maleimide group. React specifically with reduced thiols (sulfhydryl groups), such as cysteine-containing peptides, at pH 6.5-7.5.

Biotinylation reagent with maleimide group. React specifically with reduced thiols (sulfhydryl groups), such as cysteine-containing peptides, at pH 6.5-7.5.