Maleimide-PEG₂-succinimidyl ester - ≥99% , CAS No.955094-26-5

CAS: 955094-26-5 Cat. No.: M122176 Molecular Weight: 425.39
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
Maleimide-PEG2-NHS | Maleimidopropionyl-PEG2-NHS Ester | 3-[2-[2-[[3-(2,5-Dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]propanoic acid 2,5-dioxo-1-pyrrolidinyl ester | Succinimide-Maleimide PEG
Storage
Store at -20°C,Argon charged
Shipped In
Ice chest + Ice pads
Application
227,228,229
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
50mg
M122176-50mg
2
$147.90
100mg
M122176-100mg
1
$236.90
250mg
M122176-250mg
2
$533.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C,Argon charged Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Heterobifunctional crosslinker with short ethylene oxide spacer for linking amine- to sulfhydryl-containing compounds or biomolecules. Maleimide functional group will react with sulfhydryls and the succinimidyl ester group will react with amines. Spacer length is 17.6 angstroms.

Specifications

Synonyms
Maleimide-PEG2-NHS | Maleimidopropionyl-PEG2-NHS Ester | 3-[2-[2-[[3-(2, 5-Dihydro-2, 5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]propanoic acid 2, 5-dioxo-1-pyrrolidinyl ester | Succinimide-Maleimide PEG
Specifications & Purity
≥99%
Storage
Store at -20°C, Argon charged
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥99%
Names and Identifiers
Canonical SmilesC1CC(=O)N(C1=O)OC(=O)CCOCCOCCNC(=O)CCN2C(=O)C=CC2=O
IUPAC Name(2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[3-(2,5-dioxopyrrol-1-yl)propanoylamino]ethoxy]ethoxy]propanoate
InChIKeyTZPDZOJURBVWHS-UHFFFAOYSA-N
INCHI1S/C18H23N3O9/c22-13(5-8-20-14(23)1-2-15(20)24)19-7-10-29-12-11-28-9-6-18(27)30-21-16(25)3-4-17(21)26/h1-2H,3-12H2,(H,19,22)
Isomeric SMILES C1CC(=O)N(C1=O)OC(=O)CCOCCOCCNC(=O)CCN2C(=O)C=CC2=O
WGK Germany 3
Molecular Weight 425.39
Reaxy-Rn 26924321
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=26924321&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassPyrrolidines
SubclassPyrrolidones
Intermediate Tree Nodes Not available
Direct ParentMaleimides
Alternative Parents Pyrrolidine-2-ones  N-substituted carboxylic acid imides  Pyrrolines  Dicarboximides  Secondary carboxylic acid amides  Lactams  Monocarboxylic acids and derivatives  Dialkyl ethers  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents Maleimide - Carboxylic acid imide, n-substituted - 2-pyrrolidone - Carboxylic acid imide - Dicarboximide - Pyrroline - Carboxamide group - Lactam - Secondary carboxylic acid amide - Carboxylic acid derivative - Dialkyl ether - Ether - Monocarboxylic acid or derivatives - Azacycle - Organic oxide - Organic nitrogen compound - Organopnictogen compound - Carbonyl group - Hydrocarbon derivative - Organonitrogen compound - Organooxygen compound - Organic oxygen compound - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as maleimides. These are compounds containing a 2,5-pyrroledione moiety.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

3 results found

Lot NumberCertificate TypeDateItem
F2204640Certificate of AnalysisJun 11, 2026 M122176
F2204649Certificate of AnalysisJun 11, 2026 M122176
F2204650Certificate of AnalysisJun 11, 2026 M122176
Chemical and Physical Properties
Sensitivitymoisture sensitive
Melt Point(°C)92-94°C
Molecular Weight425.400 g/mol
XLogP3-2.600
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count9
Rotatable Bond Count14
Exact Mass425.143 Da
Monoisotopic Mass425.143 Da
Topological Polar Surface Area149.000 Ų
Heavy Atom Count30
Formal Charge0
Complexity700.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Solution Calculators
Reviews

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