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Maleimide-PEG2-NHS Ester

CAS No.
955094-26-5
Chemical Name:
Maleimide-PEG2-NHS Ester
Synonyms
Mal-PEG2-NHS;2,5-dioxopyrrolidin-1-yl 3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoate;SM(PEG)2;Mal-amido-PEG2-NHS;MaI-PEG2-NHS;Mal-NH-PEG2-NHS;MAL-PEG2-PA-NHS;Maleimide-PEG2-NHS;Mal-PEG2-NHS?linker;BMPA-PEG2-NHS Ester
CBNumber:
CB22501435
Molecular Formula:
C18H23N3O9
Molecular Weight:
425.39
MDL Number:
MFCD11041137
MOL File:
955094-26-5.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-16 07:06:08

Maleimide-PEG2-NHS Ester Properties

Melting point 90.0 to 94.0 °C
Density 1.41±0.1 g/cm3(Predicted)
storage temp. -20°C
pka 15.00±0.46(Predicted)
form powder to crystal
color White to Light yellow
InChI InChI=1S/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)
InChIKey TZPDZOJURBVWHS-UHFFFAOYSA-N
SMILES C(ON1C(=O)CCC1=O)(=O)CCOCCOCCNC(=O)CCN1C(=O)C=CC1=O
UNSPSC Code 12352200
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P280-P301+P312-P302+P352-P305+P351+P338
WGK Germany  3
HS Code  29280000
Storage Class 11 - Combustible Solids

Maleimide-PEG2-NHS Ester price More Price(73)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 746223 Maleimide-PEG2-succinimidyl ester ≥95% 955094-26-5 50mg $200 2026-04-30 Buy
Sigma-Aldrich 746223 Maleimide-PEG2-succinimidyl ester ≥95% 955094-26-5 250mg $485 2026-04-30 Buy
TCI Chemical M3079 Maleimide-PEG2-NHS Ester >98.0%(GC)(N) 955094-26-5 50mg $98 2026-04-30 Buy
TCI Chemical M3339 Maleimide-PEG2-NHS Ester (2mg×5) 955094-26-5 1SET $153 2026-04-30 Buy
TCI Chemical M3079 Maleimide-PEG2-NHS Ester >98.0%(GC)(N) 955094-26-5 250mg $345 2026-04-30 Buy
Product number Packaging Price Buy
746223 50mg $200 Buy
746223 250mg $485 Buy
M3079 50mg $98 Buy
M3339 1SET $153 Buy
M3079 250mg $345 Buy

Maleimide-PEG2-NHS Ester Chemical Properties,Uses,Production

Description

Mal-amido-PEG2-NHS is a PEG linker containing a maleimide group and an NHS ester. The hydrophilic PEG spacer increases solubility in aqueous media. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

Uses

Maleimide-PEG2-NHS Ester(955094-26-5) is a 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.

reaction suitability

reaction type: Pegylations
reagent type: cross-linking reagent

IC 50

Non-cleavable Linker

Maleimide-PEG2-NHS Ester Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 155)Suppliers
Supplier Tel Email Country ProdList Advantage
Borenpharm Co., Ltd 027-65563561 sales@borenpharm.com China 1245 55
Shanghai Yanfen Biochemical Technology Co.,LTD 13611955358 15002190549 yanfen2023@126.com China 2573 58
Wanxin Biotechnology (Jiaxing) Co., LTD 0573-83568680 18057391398 3956524501@qq.com China 1441 58
Henan Mengtai Pharmaceutical Technology Co., Ltd 17634413542 1959525201@qq.com China 9011 58
Biomatrik Inc. 0573-82623377 18967387295 sales@biomatrik.cn China 1000 58
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
ChemPep, Inc. +1 (888) 615-9178 / (561) 791-8787 service@chempep.com United States 2138 57
Chengdu Pukang Biotechnology Co., Ltd 18217049878 cassie.gao@pu-kang.com China 479 58
T&W GROUP 021-61551611 13296011611 contact@trustwe.com China 9884 58

View Lastest Price from Maleimide-PEG2-NHS Ester manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Mal-amido-PEG2-NHS ester pictures 2026-07-15 Mal-amido-PEG2-NHS ester
955094-26-5
10g TargetMol Chemicals Inc.
Mal-NH-PEG2-CH2CH2COONHS ester pictures 2026-01-29 Mal-NH-PEG2-CH2CH2COONHS ester
955094-26-5
1g 98% 500kg LAURENT
Mal-amido-PEG2-NHS pictures 2025-06-07 Mal-amido-PEG2-NHS
955094-26-5
5g >98.00% 5g Xian confluore Biological Technology Co., Ltd.

Maleimide-PEG2-NHS Ester Spectrum

α-Maleimidopropionyl-ω-succinimidyl-2(ethylene glycol) alpha-MaleiMidopropionyl-oMega-succiniMidyl-2(ethylene glycol) MaleiMide-NH-PEG2-NHS Ester MaleiMide-NH-PEG2-CH2CH2COONHS 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 MaleiMide-PEG2-succiniMidyl ester MaleiMide-PEG2-suciniMidyl ester Maleimide-PEG2-NHS Maleimide-PEG2-succinimidyl ester Maleimide-PEG2-succinimidyl ester 99% Mal-amido-PEG2-NHS Maleimide-PEG2-NHS Ester 2,5-Dioxopyrrolidin-1-yl 3-(2-(2-(3-(2,5-dioxo-2h-pyrrol-1(5h)-yl)propanamido)ethoxy)ethoxy)propanoate SM(PEG)2 Maleimidopropionyl-PEG2-CH2CH2COONHS Ester MAL-NH-PEG2-CH2CH2COONHS Mal-NH-PEG2-NHS (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[3-(2,5-dioxopyrrol-1-yl)propanoylamino]ethoxy]ethoxy]propanoate Propanoic acid, 3-[2-[2-[[3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]-, 2,5-dioxo-1-pyrrolidinyl ester 2,5-dioxopyrrolidin-1-yl 3-(2-(2-(3-(2,5-dioxo-1H-pyrrol-1(5H)-yl)propanamido)ethoxy)ethoxy)propanoate Maleimide-PEG2-NHS Ester (2mg*5) 13-Maleimido-11-oxo-4,7-dioxa-10-azatridecanoic Acid N-Succinimidyl Ester 2,5-Doxopyrrolidin-1-yl 3-[2-[2-[3-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamid N-Succinimidyl 13-Maleimido-11-oxo-4,7-dioxa-10-azatridecanoate Maleimide-PEG?-succinimidyl ester Mal-PEG2-NHS?linker 2,5-Dioxopyrrolidin-1-yl 3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoate[2,5-Dioxopyrrolidin-1-Yl 3-(2-(2-(3-(2,5-Dioxo-2H-Pyrrol-1(5H)-Yl)propanamido)ethoxy)ethoxy)propanoate BMPA-PEG2-NHS Ester Maleimide-NH-PEG2-CH2CH2COONHS Este Maleimide-PEG2-succinimidyl ester, ≥95% MAL-dPEG??-NHS ester (QBD-10266) 2,5-Dioxo-1-pyrrolidinyl 3-[2-[2-[3-(2,5-dioxo-2,5-dihydro-1-pyrrolyl)propanamido]ethoxy]ethoxy]propanoate Mal-NH-PEG2-CH2CH2COONHS ester Amido Mal-PEG2-NHS Ester 13-Maleimide-PEG2 Succinimidyl Ester 13-Maleimido-11-oxo-4,7-dioxa-10-azatridecanoic Acid N-Succinimidyl Ester MAL-PEG2-PA-NHS 2,5-dioxopyrrolidin-1-yl 3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoate Mal-PEG2-NHS 13-Maleimide-PEG2 Succinimidyl Ester MaI-PEG2-NHS 955094-26-5 C18H23N3O9 peg