4,7,10,13,16,19,22,25,32,35,38,41,44,47,50,53-Hexadecaoxa-28,29-dithiahexapentacontanedioic acid
4,7,10,13,16,19,22,25,32,35,38,41,44,47,50,53-Hexadecaoxa-28,29-dithiahexapentacontanedioic acid (CAS: 873013-93-5) is a complex organic compound with the molecular formula C38H74O20S2. It functions primarily as a homobifunctional PEG linker, offering reactive carboxylic acid end groups. This molecule finds utility in materials science and polymer chemistry for creating functionalised nanomaterials and advanced polymer structures.
- IUPAC
- PEG acid disulfide (n=7),PEG propionate disulfide
- Synonyms
- 13,16,19,22,25,32,35,38,41,44,47,50,53-Hexadecaoxa-28,29-dithiahexapentacontanedioic acid

Nanoparticle Functionalisation
Used in the preparation of dual-clickable Janus nanoparticles and cyclic RGD functionalised gold nanoparticles for applications such as tumour targeting.
Asymmetric Nanoparticle Design
Enables the creation of nanoparticles with asymmetric functionalities and orthogonal clickable properties.
Biomolecular Immobilisation
Facilitates the site-specific attachment of molecules like Rab6A to DNA-gold nanoparticles via poly(ethylene glycol) linkers.
Microfluidic Device Biofunctionalisation
Applied in the direct writing of metal nanoparticle films within microfluidic channels for biofunctionalisation with ligands used in protein capture and fluorescence assays.
| Molecular weight | 915.11 |
|---|---|
| Empirical formula | C38H74O20S2 |
| Assay | ≥95% (oligomer purity)≥95% |
| Storage temperature | −20°C |
| Application | Reactant for:• Preparation of orthogonally dual-clickable Janus nanoparticles via cyclic templating strategy1• Preparation of cyclic RGD functionalized gold nanoparticles for tumor targeting2• Asymmetric-functionalized nanoparticle with orthogonal clickable functionalities3• Functional immobilization of small GTPase Rab6A on DNA-gold nanoparticles by using a site-specifically attached poly(ethylene glycol) linker and thiol-place exchange reaction4• Direct writing of metal nanoparticle films inside sealed microfluidic channels in relation to biofunctionalization with ligands for protein capture and fluorescence assay5 |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| 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.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets 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 4,7,10,13,16,19,22,25,32,35,38,41,44,47,50,53-Hexadecaoxa-28,29-dithiahexapentacontanedioic acid used for?
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This compound is used as a reactant in the preparation of functionalised nanoparticles, asymmetric nanoparticles, and for biomolecular immobilisation in various research and materials science applications.
What are the CAS number and formula for this chemical?
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The CAS number is 873013-93-5 and the empirical formula is C38H74O20S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of ≥95% (oligomer purity) and ≥95%. This is a research-grade chemical and not represented as USP, BP, or EP.
What are the safety and handling recommendations?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The compound has a WGK Germany rating of 3.
How is this chemical packed, shipped, and exported?
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This chemical is typically stored at −20°C. Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals.
How can I request a sample or quote?
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Please contact our sales team to request a sample or a quote for 4,7,10,13,16,19,22,25,32,35,38,41,44,47,50,53-Hexadecaoxa-28,29-dithiahexapentacontanedioic acid.
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