PEG Maleimide

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Maleimide PEG is a sulfhydryl (thiol/SH) group reactive PEG derivative that can be used to selectively modify protein, peptide or any other surfaces with available sulfhydryl groups. The reaction between maleimide and thiol proceeds readily at pH 6.5~7.5 to form stable thioether bonds.

The following Maleimide PEGs are available at BroadPharm. Click the catalog number to see purity specifications and property information.

Catalog No. Name Structure M.W. Purity Pricing

Mal-PEG-Acid

BP-21859 Mal-PEG1-acid Mal-PEG1-acid 213.2 98% Pricing
BP-21567 Mal-PEG2-acid Mal-PEG2-acid 257.2 98% Pricing
BP-21565 Mal-PEG3-acid Mal-PEG3-acid 301.3 98% Pricing
BP-20609 Mal-PEG4-acid Mal-PEG4-acid 345.4 98% Pricing
BP-21725 Mal-PEG5-acid Mal-PEG5-acid 389.4 98% Pricing
BP-20610 Mal-PEG6-acid Mal-PEG6-acid 433.5 98% Pricing
BP-21860 Mal-PEG8-acid Mal-PEG8-acid 521.6 95% Pricing
BP-24124 Mal-PEG12-acid Mal-PEG12-acid 697.8 98% Pricing

Mal-PEG-NHS ester

BP-21854 Mal-PEG1-NHS ester Mal-PEG1-NHS ester 310.3 98% Pricing
BP-21680 Mal-PEG2-NHS ester Mal-PEG2-NHS ester 354.3 98% Pricing
BP-21855 Mal-PEG3-NHS ester Mal-PEG3-NHS ester 398.4 98% Pricing
BP-20554 Mal-PEG4-NHS ester Mal-PEG4-NHS ester 442.4 98% Pricing
BP-21856 Mal-PEG5-NHS ester Mal-PEG5-NHS ester 486.5 98% Pricing
BP-20553 Mal-PEG6-NHS ester Mal-PEG6-NHS ester 530.5 98% Pricing
BP-23302 Mal-PEG8-NHS ester Mal-PEG8-NHS ester 618.6 97% Pricing
BP-24079 Mal-PEG12-NHS ester Mal-PEG12-NHS ester 794.9 96% Pricing

Mal-PEG-PFP ester

BP-21837 Mal-PEG1-PFP Mal-PEG1-PFP 379.2 98% Pricing
BP-21838 Mal-PEG2-PFP Mal-PEG2-PFP 423.3 98% Pricing
BP-21839 Mal-PEG3-PFP Mal-PEG3-PFP 467.3 98% Pricing
BP-21007 Mal-PEG4-PFP Mal-PEG4-PFP 511.4 98% Pricing
BP-21840 Mal-PEG5-PFP Mal-PEG5-PFP 555.5 98% Pricing
BP-21008 Mal-PEG6-PFP Mal-PEG6-PFP 599.5 98% Pricing

Mal-PEG-t-butyl ester

BP-22322 Mal-PEG1-t-butyl ester Mal-PEG1-t-butyl ester 269.3 98% Pricing
BP-21566 Mal-PEG2-t-butyl ester Mal-PEG2-t-butyl ester 313.3 98% Pricing
BP-21564 Mal-PEG3-t-butyl ester Mal-PEG3-t-butyl ester 357.4 98% Pricing
BP-21069 Mal-PEG4-t-butyl ester Mal-PEG4-t-butyl ester 401.5 98% Pricing
BP-24144 Mal-PEG5-t-butyl ester Mal-PEG5-t-butyl ester 445.5 98% Pricing
BP-21523 Mal-PEG6-t-butyl ester Mal-PEG6-t-butyl ester 489.6 98% Pricing
BP-23335 Mal-PEG8-t-butyl ester Mal-PEG8-t-butyl ester 577.7 98% Pricing
BP-24122 Mal-PEG12-t-butyl ester Mal-PEG12-t-butyl ester 753.9 98% Pricing
 
BP-20998 Mal-Amido-PEG4-t-butyl ester Mal-Amido-PEG4-t-butyl ester 472.5 98% Pricing

Mal-PEG-alcohol

BP-22341 Mal-PEG2-alcohol Mal-PEG2-alcohol 185.2 98% Pricing
BP-22340 Mal-PEG3-alcohol Mal-PEG3-alcohol 229.2 98% Pricing
BP-21515 Mal-PEG4-alcohol Mal-PEG4-alcohol 273.3 95% Pricing

Mal-PEG-amine

BP-23313 Mal-PEG2-amine TFA salt Mal-PEG2-amine TFA salt 228.3 98% Pricing

Mal-PEG-NH-Boc

BP-23291 Mal-PEG2-NH-Boc Mal-PEG2-NH-Boc 328.4 98% Pricing
 
BP-23833 Mal-amido-PEG9-NHBoc Mal-amido-PEG9-NHBoc 707.8 98% Pricing

Mal-amido-PEG-acid

BP-22212 Mal-amido-PEG2-acid Mal-amido-PEG2-acid 328.3 97% Pricing
BP-21000 Mal-amido-PEG4-acid Mal-amido-PEG4-acid 416.4 97% Pricing
BP-22213 Mal-amido-PEG6-acid Mal-amido-PEG6-acid 504.5 97% Pricing
BP-23537 Mal-amido-PEG7-acid Mal-amido-PEG7-acid 548.6 Pricing
BP-22214 Mal-amido-PEG8-acid Mal-amido-PEG8-acid 592.6 97% Pricing
BP-23538 Mal-amido-PEG9-acid Mal-amido-PEG9-acid 636.7 Pricing
BP-22984 Mal-amido-PEG10-acid Mal-amido-PEG10-acid 680.8 97% Pricing
BP-22215 Mal-amido-PEG12-acid Mal-amido-PEG12-acid 768.9 97% Pricing
BP-22399 Mal-amido-PEG24-acid Mal-amido-PEG24-acid 1297.5 97% Pricing

Mal-amido-PEG-amine

BP-23834 Mal-amido-PEG9-amine TFA salt Mal-amido-PEG9-amine TFA salt 607.7 98% Pricing

Mal-amido-PEG-NHS

BP-22156 Mal-amido-PEG2-NHS Mal-amido-PEG2-NHS 425.4 95% Pricing
BP-22157 Mal-amido-PEG4-NHS Mal-amido-PEG4-NHS 513.5 95% Pricing
BP-22158 Mal-amido-PEG6-NHS Mal-amido-PEG6-NHS 601.6 95% Pricing
BP-22159 Mal-amido-PEG8-NHS Mal-amido-PEG8-NHS 689.7 95% Pricing
BP-22217 Mal-amido-PEG12-NHS Mal-amido-PEG12-NHS 865.9 95% Pricing
BP-22218 Mal-amido-PEG24-NHS Mal-amido-PEG24-NHS 1394.6 95% Pricing

Mal-amido-PEG-TFP ester

BP-22739 Mal-amido-PEG2-TFP ester Mal-amido-PEG2-TFP ester 476.4 95% Pricing
BP-22740 Mal-amido-PEG4-TFP ester Mal-amido-PEG4-TFP ester 564.5 95% Pricing
BP-22741 Mal-amido-PEG8-TFP ester Mal-amido-PEG8-TFP ester 740.7 95% Pricing
BP-22742 Mal-amido-PEG12-TFP ester Mal-amido-PEG12-TFP ester 916.9 95% Pricing
BP-22743 Mal-amido-PEG24-TFP ester Mal-amido-PEG24-TFP ester 1445.6 95% Pricing

Mal-amido-PEG-alkyne

BP-22683 Propargyl-PEG4-Maleimide Propargyl-PEG4-Maleimide 382.4 90% Pricing

m-PEG-Mal

BP-22747 m-PEG4-Mal m-PEG4-Mal 358.4 98% Pricing
BP-22081 m-PEG6-Mal m-PEG6-Mal 446.5 98% Pricing
BP-22748 m-PEG8-Mal m-PEG8-Mal 534.6 98% Pricing
BP-22749 m-PEG12-Mal m-PEG12-Mal 710.8 98% Pricing
BP-22750 m-PEG24-Mal m-PEG24-Mal 1239.5 98% Pricing
BP-22751 m-PEG36-Mal m-PEG36-Mal 1768.1 98% Pricing
BP-22752 m-PEG48-Mal m-PEG48-Mal 2296.8 98% Pricing

Mal-Alkyl-acid

BP-20452 3-Maleimidopropionic acid 3-Maleimidopropionic acid 169.1 98% Pricing
BP-21999 4-(2,5-dioxo-2H-pyrrol-1(5H)-yl)butanoic acid 4-(2,5-dioxo-2H-pyrrol-1(5H)-yl)butanoic acid 183.2 96% Pricing
BP-23545 5-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)pentanoic acid 5-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)pentanoic acid 197.2 98% Pricing
BP-20415 6-Maleimidocaproic acid 6-Maleimidocaproic acid 211.2 98% Pricing
 
BP-20232 4-((2,5-Dioxo-2H-pyrrol-1(5H)-yl)methyl)cyclohexanecarboxylic acid 4-((2,5-Dioxo-2H-pyrrol-1(5H)-yl)methyl)cyclohexanecarboxylic acid 237.3 96% Pricing

Mal-Alkyl-amine

BP-20991 1-(2-Aminoethyl)-1H-pyrrole-2,5-dione TFA salt 1-(2-Aminoethyl)-1H-pyrrole-2,5-dione TFA salt 140.1 95% Pricing
BP-20986 Mal-C6-amine TFA salt Mal-C6-amine TFA salt 196.3 95% Pricing

Mal-Alkyl-Bromide

BP-22139 Mal-PEG1-Bromide Mal-PEG1-Bromide 248.1 98% Pricing

Mal-Alkyl-NHS ester

BP-20509 3-Maleimido-propionic NHS ester 3-Maleimido-propionic NHS ester 266.2 98% Pricing
BP-20400 Mal-heptanoic NHS ester Mal-heptanoic NHS ester 308.3 98% Pricing
 
BP-20416 6-Maleimidocaproic acid PFP ester 6-Maleimidocaproic acid PFP ester 377.3 96% Pricing

Mal-Alkyl-t-Boc-amine

BP-20992 tert-butyl 2-(2,5-dioxo-2H-pyrrol-1(5H)-yl)ethylcarbamate tert-butyl 2-(2,5-dioxo-2H-pyrrol-1(5H)-yl)ethylcarbamate 240.3 95% Pricing
BP-20987 tert-butyl 6-(2,5-dioxo-2H-pyrrol-1(5H)-yl)hexylcarbamate tert-butyl 6-(2,5-dioxo-2H-pyrrol-1(5H)-yl)hexylcarbamate 296.4 96% Pricing

Bis-Mal-PEG

BP-20999 Bis-Mal-PEG3 Bis-Mal-PEG3 494.5 98% Pricing
BP-22152 Bis-Mal-PEG6 Bis-Mal-PEG6 626.7 98% Pricing
BP-22151 Bis-Mal-PEG11 Bis-Mal-PEG11 846.9 98% Pricing
BP-22776 Bis-Mal-PEG19 Bis-Mal-PEG19 1199.4 98% Pricing

Mal-PEG-Glu-NH-m-PEG

BP-22753 Mal-PEG4-Glu(OH)-NH-m-PEG24 Mal-PEG4-Glu(OH)-NH-m-PEG24 1615.9 98% Pricing
 
BP-22754 Mal-PEG4-Glu(TFP ester)-NH-m-PEG24 Mal-PEG4-Glu(TFP ester)-NH-m-PEG24 1763.9 98% Pricing

Mal-PEG-Lys-NH-m-PEG

BP-22755 Mal-PEG4-Lys(t-Boc)-NH-m-PEG24 Mal-PEG4-Lys(t-Boc)-NH-m-PEG24 1715.1 98% Pricing
 
BP-22756 Mal-PEG4-Lys(TFA)-NH-m-PEG24 Mal-PEG4-Lys(TFA)-NH-m-PEG24 1729.0 98% Pricing

Bis-Mal-Lysine-PEG

BP-22616 Bis-Mal-Lysine-PEG4-acid Bis-Mal-Lysine-PEG4-acid 695.7 98% Pricing
 
BP-22617 Bis-Mal-Lysine-PEG4-TFP ester Bis-Mal-Lysine-PEG4-TFP ester 843.8 98% Pricing

Dibromo-Mal-PEG

BP-23413 3,4-Dibromo-Mal-PEG8-acid 3,4-Dibromo-Mal-PEG8-acid 679.4 97% Pricing
 
BP-22011 3,4-Dibromo-Mal-PEG2-Amine TFA salt 3,4-Dibromo-Mal-PEG2-Amine TFA salt 386.0 98% Pricing
 
BP-22016 3,4-Dibromo-Mal-PEG2-Boc-Amine 3,4-Dibromo-Mal-PEG2-Boc-Amine 486.2 98% Pricing
 
BP-23382 3,4-Dibromo-Mal-PEG4-t-butyl ester 3,4-Dibromo-Mal-PEG4-t-butyl ester 559.3 98% Pricing
BP-23398 3,4-Dibromo-Mal-PEG8-t-butyl ester 3,4-Dibromo-Mal-PEG8-t-butyl ester 735.5 98% Pricing

Branched PEG

BP-23784 N-Mal-N-bis(PEG2-amine) TFA salt N-Mal-N-bis(PEG2-amine) TFA salt 430.5 98% Pricing
BP-23786 N-Mal-N-bis(PEG4-amine) TFA salt N-Mal-N-bis(PEG4-amine) TFA salt 606.7 98% Pricing
 
BP-23174 N-(Mal-PEG6)-N-bis(PEG3-amine) TFA salt N-(Mal-PEG6)-N-bis(PEG3-amine) TFA salt 854.0 98% Pricing
 
BP-23738 N-Mal-N-bis(PEG2-acid) N-Mal-N-bis(PEG2-acid) 488.5 98% Pricing
BP-23654 N-Mal-N-bis(PEG4-acid) N-Mal-N-bis(PEG4-acid) 664.7 98% Pricing
 
BP-23777 N-Mal-N-bis(PEG2-NHS ester) N-Mal-N-bis(PEG2-NHS ester) 682.6 98% Pricing
BP-23736 N-Mal-N-bis(PEG4-NHS ester) N-Mal-N-bis(PEG4-NHS ester) 858.9 98% Pricing
 
BP-22363 Tri(Mal-PEG2-amide)-amine Tri(Mal-PEG2-amide)-amine 1077.2 98% Pricing
 
BP-23477 N-(Mal-PEG6)-N-bis(PEG7-TCO) N-(Mal-PEG6)-N-bis(PEG7-TCO) 1653.0 90% Pricing
 
BP-23781 N-Mal-N-bis(PEG2-NH-Boc) N-Mal-N-bis(PEG2-NH-Boc) 630.7 98% Pricing
BP-23783 N-Mal-N-bis(PEG4-NH-Boc) N-Mal-N-bis(PEG4-NH-Boc) 807.0 98% Pricing
 
BP-23730 N-Mal-N-bis(PEG2-t-butyl ester) N-Mal-N-bis(PEG2-t-butyl ester) 600.7 98% Pricing