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ChemicalBook >> CAS DataBase List >> Mal-PEG2-COOH

Mal-PEG2-COOH

Mal-PEG2-COOH price.
  • $21 - $1540
  • Product name: Mal-PEG2-COOH
  • CAS: 756525-98-1
  • MF: C14H20N2O7
  • MW: 328.32
  • EINECS:-0
  • MDL Number:MFCD11041136
  • Synonyms:Mal-PEG2-COOH;3-[2-[2-[[3-(2,5-Dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]propanoic acid;Maleimide-NH-PEG2-CH2CH2COOH;Maleimide-PEG2-propionic acid;Mal-NH-PEG2-COOH;Mal-amido-PEG2-NHS ester;Propanoic acid, 3-[2-[2-[[3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]-;Mal-amido-PEG2-propionic acid
64 prices
Selected condition:
Brand
  • aablocks
  • ACHEMBLOCK
  • Acrotein
  • Ambeed
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Arctom
  • Biosynth
  • BroadPharm
  • ChemPep
  • ChemScene
  • dPEG
  • Iris Biotech GmbH
  • purepeg
  • Synthonix
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  • Manufactureraablocks
  • Product numberAA0039ZM
  • Product description3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid ≥98%
  • Packaging100mg
  • Price$21
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0039ZM
  • Product description3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid 98%
  • Packaging250mg
  • Price$32
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0039ZM
  • Product description3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid 98%
  • Packaging1g
  • Price$83
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0039ZM
  • Product description3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid 98%
  • Packaging5g
  • Price$284
  • Updated2026-05-28
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberQ53120
  • Product description3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoic acid 97%
  • Packaging5G
  • Price$250
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberQ53120
  • Product description3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoic acid 97%
  • Packaging1G
  • Price$70
  • Updated2026-05-27
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  • ManufacturerACHEMBLOCK
  • Product numberQ53120
  • Product description3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoic acid 97%
  • Packaging25G
  • Price$850
  • Updated2026-05-27
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  • ManufacturerAcrotein
  • Product numberB-1692
  • Product descriptionMal-CH2CH2CONH-PEG2-CH2CH2COOH 97%
  • Packaging10g
  • Price$534.24
  • Updated2026-05-25
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  • ManufacturerAcrotein
  • Product numberB-1692
  • Product descriptionMal-CH2CH2CONH-PEG2-CH2CH2COOH 97%
  • Packaging1g
  • Price$84.7
  • Updated2026-05-25
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  • ManufacturerAcrotein
  • Product numberB-1692
  • Product descriptionMal-CH2CH2CONH-PEG2-CH2CH2COOH 97%
  • Packaging5g
  • Price$296.8
  • Updated2026-05-25
  • Buy
  • ManufacturerAmbeed
  • Product numberA986369
  • Product descriptionMal-amido-PEG2-C2-acid 98%
  • Packaging1g
  • Price$105
  • Updated2026-06-05
  • Buy
  • ManufacturerAmbeed
  • Product numberA986369
  • Product descriptionMal-amido-PEG2-C2-acid 98%
  • Packaging250mg
  • Price$40
  • Updated2026-06-05
  • Buy
  • ManufacturerAmbeed
  • Product numberA986369
  • Product descriptionMal-amido-PEG2-C2-acid 98%
  • Packaging5g
  • Price$359
  • Updated2026-06-05
  • Buy
  • ManufacturerAmbeed
  • Product numberA986369
  • Product descriptionMal-amido-PEG2-C2-acid 98%
  • Packaging25g
  • Price$1257
  • Updated2026-06-05
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  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberPOL0002296
  • Product descriptionMAL-EG-(2)-COOH 95.00%
  • Packaging5MG
  • Price$502.82
  • Updated2021-12-16
  • Buy
  • ManufacturerApolloscientific
  • Product numberBIPG1472
  • Product descriptionMal-amido-PEG2-acid 98%
  • Packaging25g
  • Price$1540
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA0039ZM 3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid ≥98% 100mg $21 2026-05-28 Buy
aablocks AA0039ZM 3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid 98% 250mg $32 2026-05-28 Buy
aablocks AA0039ZM 3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid 98% 1g $83 2026-05-28 Buy
aablocks AA0039ZM 3-[2-[2-[[3-(2,5-Dihydro-2,5-Dioxo-1H-Pyrrol-1-Yl)-1-Oxopropyl]Amino]Ethoxy]Ethoxy]Propanoic Acid 98% 5g $284 2026-05-28 Buy
ACHEMBLOCK Q53120 3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoic acid 97% 5G $250 2026-05-27 Buy
ACHEMBLOCK Q53120 3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoic acid 97% 1G $70 2026-05-27 Buy
ACHEMBLOCK Q53120 3-(2-(2-(3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanamido)ethoxy)ethoxy)propanoic acid 97% 25G $850 2026-05-27 Buy
Acrotein B-1692 Mal-CH2CH2CONH-PEG2-CH2CH2COOH 97% 10g $534.24 2026-05-25 Buy
Acrotein B-1692 Mal-CH2CH2CONH-PEG2-CH2CH2COOH 97% 1g $84.7 2026-05-25 Buy
Acrotein B-1692 Mal-CH2CH2CONH-PEG2-CH2CH2COOH 97% 5g $296.8 2026-05-25 Buy
Ambeed A986369 Mal-amido-PEG2-C2-acid 98% 1g $105 2026-06-05 Buy
Ambeed A986369 Mal-amido-PEG2-C2-acid 98% 250mg $40 2026-06-05 Buy
Ambeed A986369 Mal-amido-PEG2-C2-acid 98% 5g $359 2026-06-05 Buy
Ambeed A986369 Mal-amido-PEG2-C2-acid 98% 25g $1257 2026-06-05 Buy
American Custom Chemicals Corporation POL0002296 MAL-EG-(2)-COOH 95.00% 5MG $502.82 2021-12-16 Buy
Apolloscientific BIPG1472 Mal-amido-PEG2-acid 98% 25g $1540 2026-06-04 Buy

Properties

Boiling point :617.3±55.0 °C(Predicted)
Density :1.318±0.06 g/cm3(Predicted)
storage temp. :2-8°C, stored under nitrogen
solubility :Soluble in DMSO
pka :4.28±0.10(Predicted)
form :Solid
color :White to off-white

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

Mal-amido-PEG2-acid is a PEG linker containing a maleimide group and a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

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