MT(PEG)4 Methyl-PEG-Thiol Compound
MT(PEG)4 Methyl-PEG-Thiol Compound
Thermo Scientific™

MT(PEG)4 Methyl-PEG-Thiol Compound

Thermo Scientific Pierce MT(PEG)4, or methyl-PEG4-thiol, is a methyl- and sulfhydryl-terminated compound that contains a 4-unit polyethylene glycol (PEG) spacerRead more
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Catalog number 26132
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334.00
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Price (USD)
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Each
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Thermo Scientific Pierce MT(PEG)4, or methyl-PEG4-thiol, is a methyl- and sulfhydryl-terminated compound that contains a 4-unit polyethylene glycol (PEG) spacer and is used to modify surfaces such as quantum dots, monolayers and magnetic particles.

Features of MT(PEG)4:

Metal-binding—terminal monodentate thiol reacts spontaneously with gold surfaces through dative binding
Methyl—terminal methyl group is unreactive, the primary function of this compound being to coat quantum dot and other surfaces to reduce nonspecific binding in assays
Polyethylene glycol—PEG groups are flexible, non-immunogenic, hydrophilic, and significantly reduce nonspecific binding of surfaces for protein methods
Spacer arm—four-unit PEG spacer makes compound nearly 16 angstroms long

MT(PEG)4 is monodentate thiol-terminated and methyl pegylation reagent. The PEG compound has a defined molecular weight and spacer length and is useful for modifying surfaces such quantum dots, self-assembled monolayers and magnetic particles. Functionalization of solid surfaces with polyethylene glycol spacers such as this one significantly reduces nonspecific protein binding.

The use of MT(PEG)4 with CT(PEG)12 in surface modification can form a hydrophilic 'lawn' of methyl ether-terminated PEGs with periodic exposed carboxylic acid-containing PEGs. The exposed carboxylic acid groups can be coupled to affinity ligands using the carbodiimide coupling reaction with EDC and sulfo-NHS.

Related Products
ML(PEG)4 Methyl-PEG-Lipoamide Compound
For Research Use Only. Not for use in diagnostic procedures.
Specifications
Chemical ReactivityMetal Surface
Label TypePolyethylene Glycol (PEG), Blocking Groups
Reactive MoietyCarboxylic Acid, Thiol
Spacer4 ethylene glycol units
FormLiquid
Quantity100 mg
SolubilityDMF or DMSO
Product TypeThiol Compound
Unit SizeEach
Contents & Storage
Upon receipt store at -20°C protected from moisture. Products shipped at ambient temperature.

Frequently asked questions (FAQs)

What are the recommended storage conditions for MT(PEG)4 Methyl-PEG-Thiol Compound (Cat. No. 26132)?

MT(PEG)4 Methyl-PEG-Thiol Compound (Cat. No. 26132) turns to liquid at RT. PEG-thiol reagents are low-melting solids that are difficult to weigh and dispense. To facilitate handling, make a stock solution by dissolving the entire contents of the bottle (100 mg in solid or liquid form) in dimethylsulfoxide (DMS) or dimethylformamide (DMF) to the desired stock concentration. Store unused stock solution at -20 degrees C.

Please note: the molecular weight of MT(PEG)4 Methyl-PEG-Thiol Compound is 224.32 g/ml.

For more information about protocol an use, please refer to the Instructions.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

I received my order of MT(PEG)4 Methyl-PEG-Thiol Compound (Cat. No. 26132) as a liquid solution, instead of a solid form. Is this normal?

MT(PEG)4 Methyl-PEG-Thiol Compound (Cat. No. 26132) turns to liquid at RT. It is normal for the product to change state during transport as it is shipped at ambient temperature. The PEG-thiol reagents are low-melting solids that are difficult to weigh and dispense. To facilitate handling, make a stock solution by dissolving the entire contents of the bottle (100 mg in solid or liquid form) in dimethylsulfoxide (DMS) or dimethylformamide (DMF) to the desired stock concentration. Store unused stock solution at -20 degrees C.

Please note: the molecular weight of MT(PEG)4 Methyl-PEG-Thiol Compound is 224.32 g/ml.

For more information about protocol and use, please refer to the Instructions.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.