PEG esters & acids – Polypure https://polypure.com High purity PEG oligomers Fri, 09 Oct 2026 14:05:58 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.3 https://polypure.com/wp-content/uploads/2024/07/cropped-cropped-logo-1-180x180-1-32x32.png PEG esters & acids – Polypure https://polypure.com 32 32 Amino PEG-80 acid https://polypure.com/product/amino-peg-80-acid/ Mon, 31 Aug 2026 11:24:53 +0000 https://polypure.com/?post_type=product&p=2547 Amino PEG-44 acid https://polypure.com/product/amino-peg-44-acid/ Mon, 31 Aug 2026 11:21:47 +0000 https://polypure.com/?post_type=product&p=2544 Amino PEG-27 acid https://polypure.com/product/amino-peg-27-acid/ Mon, 31 Aug 2026 11:18:33 +0000 https://polypure.com/?post_type=product&p=2541 Amino PEG-35 acid https://polypure.com/product/amino-peg-35-acid/ Mon, 08 Jun 2026 12:23:16 +0000 https://polypure.com/?post_type=product&p=2431 Alternative names: Amino PEG-36 acid; Amino PEG-35 acid

Chemical formula: C75H151NO38

General CAS for all amino PEG acids: 756526-07-4; 196936-04-6

]]> Maleimidopropionyl PEG-27 NHS ester https://polypure.com/product/maleimidopropionyl-peg-27-nhs-ester/ Thu, 03 Apr 2025 10:53:35 +0000 https://polypure.com/?post_type=product&p=1806 Read more]]> Alternative names: 2,5-Dioxopyrrolidin-1-yl 1-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-oxo-7,10,13,16,19,22,25,28,31,34,37,40,43,46,49,52,55,58,61,64,67,70,73,76,79,82,85,88-octacosaoxa-4-azahennonacontan-91-oate
Application: The maleimidopriopionyl group reacts specifically with thiol (–SH) groups to form stable thioether bonds, while the NHS ester reacts with primary amines (–NH₂) to form stable amide bonds. This selectivity allows for controlled, stepwise conjugation under mild conditions. Heterobifunctional property, makes it especially useful for linking biomolecules in a precise way, such as attaching proteins, peptides, drugs, or targeting ligands to surfaces, nanoparticles, or other substrates in drug delivery and bioconjugation.
]]> Biotin PEG-11 propionic acid https://polypure.com/product/biotin-peg-11-propionic-acid/ Thu, 03 Apr 2025 10:51:54 +0000 https://polypure.com/?post_type=product&p=1805 PEG-29 thiol acid https://polypure.com/product/peg-29-thiol-acid/ Thu, 03 Apr 2025 10:47:02 +0000 https://polypure.com/?post_type=product&p=1803 PEG-7 thiol acid https://polypure.com/product/peg-7-thiol-acid/ Thu, 03 Apr 2025 10:44:21 +0000 https://polypure.com/?post_type=product&p=1802 PEG-12 diacid https://polypure.com/product/peg-12-diacid/ Thu, 03 Apr 2025 10:39:16 +0000 https://polypure.com/?post_type=product&p=1800 PEG-12 tBu-propionate https://polypure.com/product/peg-12-tbu-propionate/ Thu, 03 Apr 2025 10:35:51 +0000 https://polypure.com/?post_type=product&p=1799 Alternative names: Hydroxy-PEG12-t-butyl ester; Hydroxy-PEG12-t-butyl ester; OH-PEG12-tBu-ester; 1-Hydroxy-3,6,9,12,15,18,21,24,27,30,33,36-dodécaoxanonatriacontan-39-oate de 2-méthyl-2-propanyle; 2-Methyl-2-propanyl 1-hydroxy-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate; 3,6,9,12,15,18,21,24,27,30,33,36-Dodecaoxanonatriacontan-39-oic acid, 1-hydroxy-, 1,1-dimethylethyl ester; tert-butyl 3-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
Molecular formula: C31H62O15

Applications:

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