Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid
Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid (CAS 165729-81-7), molecular formula HSC2H4O(C2H4O)nCH2CO2H, is a high-purity chemical supplied by Tech Serve Solutions for polymer science applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- mercaptoPEG acid,mercaptopoly(ethylene glycol) carboxylic acid,mercaptopolyoxyethylene acetic acid,thio-PEG,thiol-PEG-carboxylate,thiol-PEG-acid

| Linear formula | HSC2H4O(C2H4O)nCH2CO2H |
|---|---|
| Form | solid |
| Storage temperature | −20°C |
| Application | Reported applications include: bioconjugation, drug delivery, PEG hydrogel, crosslinker, and surface functionalization. |
| Flash point | >318 °C / >604.4 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Mol Wt | PEG average Mn 3,400 (n~77)average Mn 3,500 |
|---|---|
| Transition Temp | Tm 52-57 °C |
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid?
+
Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid (CAS 165729-81-7), molecular formula HSC2H4O(C2H4O)nCH2CO2H, is a high-purity chemical supplied by Tech Serve Solutions for polymer science applications, to USP, BP and EP standards.
What grades of Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid?
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Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid has CAS number 165729-81-7 and molecular formula HSC2H4O(C2H4O)nCH2CO2H. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid be stored?
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Store Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid used for?
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Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid is used in polymer science applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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