Biotin-PEG4-NHS Ester

Catalog#
Unit Size
Price (USD)
Availability
Qty
B103-25
25 mg
$95.00
In stock
B103-100
100 mg
$195.00
In stock
B103-1G
1000 mg
$695.00
In stock

Biotin-PEG4-NHS Ester reacts specifically and efficiently with primary amines (e.g., a side chain of lysine residues or aminosilane-coated surfaces) at pH 7-9 to form covalent bonds. The hydrophilic polyethylene glycol (PEG) spacer arm of this reagent imparts water solubility that is transferred to the labeled molecule, thus reducing aggregation of labeled proteins stored in solution. The PEG spacer arm also gives the reagent a long and flexible connection to minimize steric hindrance involved with binding to avidin molecules.

Molecular weight
588.67
Chemical composition
C25H40N4O10S
CAS
459426-22-3
Solubility
DMSO, DMF, DCM, THF, Chloroform
Purity
>95%
Appearance
White to grey amorphous solid
Storage conditions
-20°C. Desiccate
Shipping conditions
Ambient temperature

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Enter only one — either maximum concentration of DMSO or volume DMSO added to label
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A water-soluble activated ester for biotinylation of primary amine-containing molecules.