4,7,10,13,16,19,22,25,28,31,34,37-Dodecaoxatetraconta-1,39-diyne
This product, 4,7,10,13,16,19,22,25,28,31,34,37-Dodecaoxatetraconta-1,39-diyne, is a polyethylene glycol–like linker architecture featuring a long, repeating polyether chain terminated by two alkyne groups at the termini. Structurally, it provides a flexible, hydrophilic spacer that can span the distance between a ligand-bearing warhead and an E3 ligase–recruiting module while maintaining chemical handle(s) for site-specific conjugation. In PROTAC design, such bifunctional linkers enable controlled attachment strategies (for example, alkyne-based coupling to complementary partners) and help tune the effective intramolecular geometry, which is critical for productive ternary complex formation and subsequent ubiquitination. Its long chain length and ether-rich backbone can reduce steric mismatch and improve solubility of conjugates, facilitating synthesis and downstream biochemical evaluation. Overall, it is a useful building block for constructing and optimizing targeted protein degradation molecules where linker flexibility and spacing are key determinants of activity.
Structure of 1351373-49-3
Assurance
Delivery
Support
* For research and manufacturing use only. Not for human or clinical use.
| Size | Price | Stock | Quantity |
|---|---|---|---|
| -- | $-- | In stock |
Looking for different specifications? Click to request a custom quote!
Capabilities & Facilities
- Comprehensive PROTAC Platform
- Scientific Expertise & Technical Support
- Custom Synthesis & Design Service
- Extensive Product Coverage
- Cutting-Edge Innovation
- Fast Delivery & Global Support
- 24/7 customer service
- 100% quality assurance
Popular Publications Citing BOC Sciences Products
4,7,10,13,16,19,22,25,28,31,34,37-Dodecaoxatetraconta-1,39-diyne is a long-chain, homobifunctional polyether linker containing a terminal propargyl group at each end. Its extended PEG-like backbone provides substantial conformational flexibility and separates the two reactive alkyne termini. The linker can support the assembly of conjugates requiring a long, polar spacer and two independently addressable click-chemistry handles.
Structure: The molecule comprises a long polyether chain flanked by two terminal propargyl groups. Its carbon–carbon triple bonds are positioned at opposite ends of the chain and are separated by multiple saturated ethylene glycol units; they are therefore neither adjacent nor conjugated. The repeated ether linkages contribute polarity and rotational freedom, making the backbone flexible rather than intrinsically rigid or conformationally fixed.
Reactivity: Both terminal alkynes are suitable for copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC) with azide-functionalized ligands or other molecular components. The homobifunctional design enables symmetrical double conjugation or stepwise preparation of unsymmetrical products. When two different azide-bearing partners are introduced, sequential reaction and purification of the mono-substituted intermediate can improve control over product composition. Reaction conditions should also be selected to preserve sensitive groups on the conjugation partners.
* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2
Related Product Recommendations
Please contact us with any specific requirements and we will get back to you as soon as possible.





