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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.

COOH Carboxylic acid PEG has excellent water solubility and can easily react 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 5000+ polyethylene glycol PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.

Acid PEG

Cat# 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
262.30≥95% Pricing
AP10031Acid-CH2-PEG3-CH2-t-butyl ester
Quick viewAcid-CH2-PEG3-CH2-t-butyl ester
278.3≥98% Pricing
AP10670Acid-PEG3-t-butyl ester
Quick viewAcid-PEG3-t-butyl ester
306.35≥95% Pricing
AP10671Acid-PEG4-t-butyl ester
Quick viewAcid-PEG4-t-butyl ester
350.41≥95% Pricing
AP10032Acid-CH2-PEG5-CH2-t-butyl ester
Quick viewAcid-CH2-PEG5-CH2-t-butyl ester
366.40≥98% Pricing
AP11647t-butyl ester-PEG5-CH2COOH
Quick viewt-butyl ester-PEG5-CH2COOH
380.43≥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
482.56≥95% Pricing
AP13448Acid-PEG8-t-butyl ester
Quick viewAcid-PEG8-t-butyl ester
526.6≥98% Pricing
AP13449Acid-PEG10-t-butyl ester
Quick viewAcid-PEG10-t-butyl ester
614.7≥98% Pricing
AP13450Acid-PEG12-t-butyl ester
Quick viewAcid-PEG12-t-butyl ester
702.8≥98% Pricing
AP13451Acid-PEG14-t-butyl ester
Quick viewAcid-PEG14-t-butyl ester
790.9≥98% Pricing
AP13452Acid-PEG25-t-butyl ester
Quick viewAcid-PEG25-t-butyl ester
1275.5≥98% Pricing
Acid-PEG-TEMPO
AP11657Acid-PEG5-TEMPO
Quick viewAcid-PEG5-TEMPO
491.6≥95% Pricing
Bromo-aliphatic-acid
AP143057-Bromoheptanoic acid
Quick view7-Bromoheptanoic acid
209.10≥95% Pricing
AP1430610-Bromodecanoic acid
Quick view10-Bromodecanoic acid
251.20≥95% Pricing
Carboxy-PEG-sulfonic acid
AP11652Carboxy-PEG2-sulfonic acid
Quick viewCarboxy-PEG2-sulfonic acid
242.24≥95% Pricing
AP11653Carboxy-PEG4-sulfonic acid
Quick viewCarboxy-PEG4-sulfonic acid
330.35≥95% Pricing
AP11654Carboxy-PEG5-sulfonic acid
Quick viewCarboxy-PEG5-sulfonic acid
374.4≥95% Pricing
Cbz-N-Amido-PEG-acid
AP10416Cbz-N-Amido-PEG1-acid
Quick viewCbz-N-Amido-PEG1-acid
267.28≥95% Pricing
AP10417Cbz-N-Amido-PEG2-acid
Quick viewCbz-N-Amido-PEG2-acid
311.33≥95% Pricing
AP10418Cbz-N-Amido-PEG3-acid
Quick viewCbz-N-Amido-PEG3-acid
355.38≥95% Pricing
AP10419Cbz-N-Amido-PEG4-acid
Quick viewCbz-N-Amido-PEG4-acid
399.44≥95% Pricing
AP10420Cbz-N-Amido-PEG5-acid
Quick viewCbz-N-Amido-PEG5-acid
443.49≥95% Pricing
AP10421Cbz-N-Amido-PEG6-acid
Quick viewCbz-N-Amido-PEG6-acid
487.54≥95% Pricing
AP10422Cbz-N-Amido-PEG8-acid
Quick viewCbz-N-Amido-PEG8-acid
575.65≥95% Pricing
AP10423Cbz-N-Amido-PEG10-acid
Quick viewCbz-N-Amido-PEG10-acid
663.75≥95% Pricing
AP10424Cbz-N-Amido-PEG12-acid
Quick viewCbz-N-Amido-PEG12-acid
751.86≥95% Pricing
AP11655Cbz-N-amido-PEG20-acid
Quick viewCbz-N-amido-PEG20-acid
1104.29≥95% Pricing
AP10425Cbz-N-Amido-PEG24-acid
Quick viewCbz-N-Amido-PEG24-acid
1248.25≥95% Pricing
AP10426Cbz-N-Amido-PEG36-acid
Quick viewCbz-N-Amido-PEG36-acid
1809.12≥95% Pricing
Cbz-N-Amido-PEG-CH2COOH
AP10410Cbz-N-Amido-PEG1-CH2COOH
Quick viewCbz-N-Amido-PEG1-CH2COOH
253.25≥95% Pricing
AP10411Cbz-N-Amido-PEG2-CH2COOH
Quick viewCbz-N-Amido-PEG2-CH2COOH
297.30≥95% Pricing
AP10412Cbz-N-Amido-PEG3-CH2COOH
Quick viewCbz-N-Amido-PEG3-CH2COOH
341.36≥95% Pricing
AP14709Cbz-N-Amido-PEG4-CH2COOH
Quick viewCbz-N-Amido-PEG4-CH2COOH
385.40≥95% Pricing
AP10413Cbz-N-Amido-PEG5-CH2COOH
Quick viewCbz-N-Amido-PEG5-CH2COOH
429.46≥95% Pricing
AP10414Cbz-N-Amido-PEG8-CH2COOH
Quick viewCbz-N-Amido-PEG8-CH2COOH
561.62≥95% Pricing
AP10415Cbz-N-Amido-PEG10-CH2COOH
Quick viewCbz-N-Amido-PEG10-CH2COOH
649.72≥95% Pricing
Fmoc-N-amido-PEG-CH2CO2H
AP10325Fmoc-NH-PEG1-CH2COOH
Quick viewFmoc-NH-PEG1-CH2COOH
341.36≥95% Pricing
AP10326Fmoc-NH-PEG2-CH2COOH
Quick viewFmoc-NH-PEG2-CH2COOH
385.41≥95% Pricing
AP10327Fmoc-NH-PEG3-CH2COOH
Quick viewFmoc-NH-PEG3-CH2COOH
429.46≥95% Pricing
AP10328Fmoc-NH-PEG4-CH2COOH
Quick viewFmoc-NH-PEG4-CH2COOH
473.52≥95% Pricing
AP10329Fmoc-NH-PEG5-CH2COOH
Quick viewFmoc-NH-PEG5-CH2COOH
517.57≥95% Pricing
AP10330Fmoc-NH-PEG6-CH2COOH
Quick viewFmoc-NH-PEG6-CH2COOH
561.62≥95% Pricing
AP10331Fmoc-NH-PEG8-CH2COOH
Quick viewFmoc-NH-PEG8-CH2COOH
649.73≥95% Pricing
AP10332Fmoc-NH-PEG11-CH2COOH
Quick viewFmoc-NH-PEG11-CH2COOH
781.88≥95% Pricing
AP10333Fmoc-NH-PEG12-CH2COOH
Quick viewFmoc-NH-PEG12-CH2COOH
825.94≥95% Pricing
Hydroxy-PEG-acid
AP13935Hydroxy-PEG1-acid
Quick viewHydroxy-PEG1-acid
134.13≥95% Pricing
AP11199Hydroxy-PEG4-acid
Quick viewHydroxy-PEG4-acid
266.29≥95% Pricing
AP11200Hydroxy-PEG8-acid
Quick viewHydroxy-PEG8-acid
442.5≥95% Pricing
Methoxycarbonyl-PEG-t-butyl ester
AP13994Methoxycarbonyl-PEG4-t-butyl ester
Quick viewMethoxycarbonyl-PEG4-t-butyl ester
364.40≥95% Pricing
AP13993Methoxycarbonyl-PEG5-t-butyl ester
Quick viewMethoxycarbonyl-PEG5-t-butyl ester
408.5≥95% Pricing
Miscellaneous PEG acid
AP11658Active-Mono-Sulfone-PEG8-acid
Quick viewActive-Mono-Sulfone-PEG8-acid
767.88≥95% Pricing
N-methyl-N-(t-Boc)-PEG-acid
AP11631N-methyl-N-(t-Boc)-PEG4-acid
Quick viewN-methyl-N-(t-Boc)-PEG4-acid
379.45≥95% Pricing
Norbornene-PEG-acid
AP10557Norbornene-PEG3 acetic acid
Quick viewNorbornene-PEG3 acetic acid
327.37≥95% Pricing
AP10560Norbornene-PEG4 acetic acid
Quick viewNorbornene-PEG4 acetic acid
371.43≥95% Pricing
AP10558Norbornene-PEG4 acid
Quick viewNorbornene-PEG4 acid
385.45≥95% Pricing
Other Acid-peg
AP13154Gallic acid PEG4 ester
Quick viewGallic acid PEG4 ester
346.33≥95% Pricing
Pomalidomide-PEG-acetic acid
AP12386Pomalidomide-PEG2-acetic acid
Quick viewPomalidomide-PEG2-acetic acid
419.39≥95% Pricing
AP12391Pomalidomide-PEG3-acetic acid
Quick viewPomalidomide-PEG3-acetic acid
463.44≥95% Pricing
AP12392Pomalidomide-PEG4-acetic acid
Quick viewPomalidomide-PEG4-acetic acid
507.5≥95% Pricing
TBDMS-PEG-Acid
AP14131TBDMS-PEG4-Acid
Quick viewTBDMS-PEG4-Acid
336.5≥95% Pricing

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