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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
  • Propargyl-PEG-acid
  • Propargyl-PEG-CH2CO2H
  • Propargyl-PEG-(CH2)3-acid
  • Carboxy-PEG-sulfonic acid
  • Amino-PEG-acid
  • Amino-PEG-CH2COOH
  • Amino-PEG-(CH2)3CO2H
  • t-Boc-Aminooxy-PEG-acid
  • t-Boc-Aminooxy-PEG-CH2CO2H
  • Fmoc-aminooxy-PEG-acid
  • Azido-PEG-acid
  • Fmoc-NH-PEG-acid
  • Fmoc-N-amido-PEG-CH2CO2H
  • t-Boc-N-Amido-PEG-acid
  • t-Boc-N-Amido-PEG-CH2COOH
  • t-Boc-N-amido-PEG-(CH2)3CO2H
  • Biotin-acid-PEG
  • DNP-PEG-acid
  • Hydroxy-PEG-CH2CO2H
  • m-PEG-acid
  • m-PEG-(CH2)3-acid
  • N-methyl-N-(t-Boc)-PEG-acid
  • Acid-PEG-PFP ester
  • Branched PEG Acid
  • Cbz-N-Amido-PEG-CH2COOH
Cat# Name Structure M.W. Purity Pricing
Acid-PEG-mono-methyl ester
AP11648Acid-PEG3-mono-methyl ester264.27≥95% Pricing
AP11649Acid-PEG4-mono-methyl ester308.33≥95% Pricing
AP11650Acid-PEG5-mono-methyl ester352.38≥95% Pricing
AP11651Acid-PEG6-mono-methyl ester396.43≥95% Pricing
Acid-PEG-PFP ester
AP11656Acid-PEG3-PFP ester416.3≥95% Pricing
Acid-PEG-t-butyl ester
AP11646Acid-PEG1-t-butyl ester218.25≥95% Pricing
AP10669Acid-PEG2-t-butyl ester262.30≥95% Pricing
AP10670Acid-PEG3-t-butyl ester306.35≥95% Pricing
AP10671Acid-PEG4-t-butyl ester350.41≥95% Pricing
AP10665Acid-PEG5-t-butyl ester394.46≥95% Pricing
AP10667Acid-PEG6-t-butyl ester438.51≥95% Pricing
AP10668Acid-PEG7-t-butyl ester482.56≥95% Pricing
AP10031Acid-CH2-PEG3-CH2-t-butyl ester278.3≥0.98 Pricing
AP10032Acid-CH2-PEG5-CH2-t-butyl ester366.4≥0.98 Pricing
AP11647t-butyl ester-PEG5-CH2COOH380.43≥95% Pricing
AP11657Acid-PEG5-TEMPO491.6≥95% Pricing
AP12154Amino-PEG2-(CH2)3CO2H191.23≥95% Pricing
AP12155Amino-PEG4-(CH2)3CO2H279.33≥95% Pricing
AP12136Amino-PEG1-acid133.15≥95% Pricing
AP12137Amino-PEG2-acid177.2≥95% Pricing
AP12138Amino-PEG3-acid221.25≥95% Pricing
AP10221Amino-PEG4-acid265.30≥95% Pricing
AP12139Amino-PEG5-acid309.36≥95% Pricing
AP10222Amino-PEG6-acid353.41≥95% Pricing
AP10223Amino-PEG8-acid441.51≥95% Pricing

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