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Carboxylic Acid PEG is a versatile tool in ADC. It has an acid group on one end of the peg chain and another functional group on the other end.

Carboxylic acid PEG has excellent water solubility and can easily reacts with amine-containing bio-molecules under amide coupling conditions. It can also be converted to amine reactive forms, such as N-hydroxysuccinimide ester (NHS ester), pentafluorophenol ester (PFP), tetrafluorophenol (TFP) ester, and acid chloride. They are all widely used in bioconjugation, drug delivery technologies, and drug property modifications.

AxisPharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.

Acid PEG
Catalog# Name Structure M.W. Purity Pricing
Acid-PEG-mono-methyl ester
AP11648Acid-PEG3-mono-methyl ester
Quick viewAcid-PEG3-mono-methyl ester
264.27≥95% Pricing
AP11649Acid-PEG4-mono-methyl ester
Quick viewAcid-PEG4-mono-methyl ester
308.33≥95% Pricing
AP11650Acid-PEG5-mono-methyl ester
Quick viewAcid-PEG5-mono-methyl ester
352.38≥95% Pricing
AP11651Acid-PEG6-mono-methyl ester
Quick viewAcid-PEG6-mono-methyl ester
396.43≥95% Pricing
Acid-PEG-PFP ester
AP11656Acid-PEG3-PFP ester
Quick viewAcid-PEG3-PFP ester
416.3≥95% Pricing
Acid-PEG-t-butyl ester
AP11646Acid-PEG1-t-butyl ester
Quick viewAcid-PEG1-t-butyl ester
218.25≥95% Pricing
AP10669Acid-PEG2-t-butyl ester
Quick viewAcid-PEG2-t-butyl ester
262.3≥95% Pricing
AP10670Acid-PEG3-t-butyl ester
Quick viewAcid-PEG3-t-butyl ester
306.36≥95% Pricing
AP10671Acid-PEG4-t-butyl ester
Quick viewAcid-PEG4-t-butyl ester
350.41≥95% Pricing
AP10665Acid-PEG5-t-butyl ester
Quick viewAcid-PEG5-t-butyl ester
394.46≥95% Pricing
AP10667Acid-PEG6-t-butyl ester
Quick viewAcid-PEG6-t-butyl ester
438.51≥95% Pricing
AP10668Acid-PEG7-t-butyl ester
Quick viewAcid-PEG7-t-butyl ester
482.57≥95% Pricing
AP10031acid-ch2-PEG3-ch2tbu-ester
Quick viewacid-ch2-PEG3-ch2tbu-ester
278.3≥98% Pricing
AP10032acid-ch2-PEG5-ch2tbu-ester
Quick viewacid-ch2-PEG5-ch2tbu-ester
366.40≥98% Pricing
AP11647t-butyl ester-PEG5-CH2COOH
Quick viewt-butyl ester-PEG5-CH2COOH
380.43≥95% Pricing
Acid-PEG-TEMPO
AP11657Acid-PEG5-TEMPO
Quick viewAcid-PEG5-TEMPO
491.6≥95% Pricing
Amino-PEG-(CH2)3CO2H
AP12154Amino-PEG2-(CH2)3CO2H
Quick viewAmino-PEG2-(CH2)3CO2H
191.23≥95% Pricing
AP12155Amino-PEG4-(CH2)3CO2H
Quick viewAmino-PEG4-(CH2)3CO2H
279.33≥95% Pricing
Amino-PEG-acid
AP12136Amino-PEG1-acid
Quick viewAmino-PEG1-acid
133.15≥95% Pricing
AP12137Amino-PEG2-acid
Quick viewAmino-PEG2-acid
177.2≥95% Pricing
AP12138Amino-PEG3-acid
Quick viewAmino-PEG3-acid
221.25≥95% Pricing
AP10221Amino-PEG4-acid
Quick viewAmino-PEG4-acid
265.31≥95% Pricing
AP12139Amino-PEG5-acid
Quick viewAmino-PEG5-acid
309.36≥95% Pricing
AP10222Amino-PEG6-acid
Quick viewAmino-PEG6-acid
353.41≥95% Pricing
AP10223Amino-PEG8-acid
Quick viewAmino-PEG8-acid
441.52≥95% Pricing

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