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Sigma-Aldrich

Methoxypolyethylene glycol maleimide

≥90% (NMR), 5,000

Synonym(s):

Polyethylene glycol, MeO-PEG-Mal, PEG-maleimide, mono-Methyl polyethylene glycol 2-maleimidoethyl ether

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About This Item

CAS Number:
99126-64-4
MDL number:
MFCD00803681
UNSPSC Code:
12162002
PubChem Substance ID:
24882458
NACRES:
NA.25
Pricing and availability is not currently available.

Quality Level

200

Assay

≥90% (NMR)

mol wt

PEG average Mn 5,000

Ω-end

maleimide

α-end

methoxy

storage temp.

−20°C

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Application

Methoxypolyethylene glycol maleimide (MeO-PEG-Mal) is used as a protein pegylation reagent. PEGylation is the process of covalently attaching polyethylene glycol (PEG) polymer chains to other molecule such as proteins.

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Product No.
Description
Pricing

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL9369
BCCL4578
BCCJ9516
BCCL0986
BCCH7321

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Jiankun Qie et al.
Drug metabolism letters, 1(3), 232-240 (2007-08-01)
Site-specific mono-PEGylations were performed in different conformational regions of Thymosin alpha 1 (T alpha 1) by introducing one cysteine residue into the chosen site and coupling with thiol-specific mPEG-MAL reagent. Results demonstrated that PEGylated sites and regions influenced the conformations
R J Goodson et al.
Bio/technology (Nature Publishing Company), 8(4), 343-346 (1990-04-01)
We have modified recombinant interleukin-2 (rIL-2) to facilitate site-directed covalent attachment of monomethoxy polyethylene glycol (PEG). The site chosen for modification and subsequent covalent attachment with PEG (PEGylation) was the single glycosylation position found in the native interleukin-2 (IL-2). The
K Ananda et al.
Analytical biochemistry, 374(2), 231-242 (2007-12-27)
The design of the extension arm-facilitated PEGylation (EAFP) of proteins takes advantage of the high selective and quantitative aspects of the thiol-maleimide reaction. However, the efficiency of EAFP with hemoglobin varied with the batches of maleimide-PEG. The low level of
Lidia Wrobel et al.
Scientific reports, 6, 27484-27484 (2016-06-07)
Disulfide bond formation is crucial for the biogenesis and structure of many proteins that are localized in the intermembrane space of mitochondria. The importance of disulfide bond formation within mitochondrial proteins was extended beyond soluble intermembrane space proteins. Tim22, a
Deanna Davis et al.
Biochimica et biophysica acta. Proteins and proteomics, 1867(4), 382-395 (2019-01-15)
Sphingolipids are diverse lipids with essential, and occasionally opposing, functions in the cell and therefore tight control over biosynthesis is vital. Mechanisms governing this regulation are not understood. Initial steps in sphingolipid biosynthesis take place on the cytosolic face of
View All Related Papers

Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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