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QBD10247

Sigma-Aldrich

Thiol-dPEG®4-acid

>95% (HPLC)

Synonym(s):

Carboxy-PEG4-thiol, HS-PEG4-COOH, Thiol-PEG-acid, Thiol-PEG4-COOH, Thiol-PEG4-acid

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About This Item

Empirical Formula (Hill Notation):
C11H22O6S
Molecular Weight:
282.35
MDL number:
MFCD11041132
UNSPSC Code:
12352106

Assay

>95% (HPLC)

form

solid or viscous liquid

reaction suitability

reaction type: Pegylations

polymer architecture

shape: linear
functionality: heterobifunctional

shipped in

ambient

storage temp.

−20°C

Features and Benefits

Thiol-dPEG4-acid is a sulfhydryl-containing, crosslinking PEGylation reagent that has a cross-bridge of monodisperse polyethylene glycol. The single molecular weight, discrete-length PEG (dPEG) chain is 16 atoms (18.3 Å) long. The sulfhydryl end of the crosslinker reacts with gold (forming dative bonds) and with thiol-reactive functional groups such as maleimide, bromoacetyl, SPDP, and thiol. The carboxylic acid end of the molecule couples to free amines using EDC or any suitable carbodiimide. An acylating agent such as N-hydroxysuccinimide (NHS) or 2,3,5,6-tetrafluorophenol (TFP) can enhance coupling efficiency. The carboxylate must react after the sulfhydryl conjugation.

Legal Information

Products Protected under U.S. Patent #s 7,888,536 & 8,637,711 and European Patent #s 1,594,440 & 2,750,681
dPEG is a registered trademark of Quanta BioDesign

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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