α‑benzylcarboxylate‑ε‑caprolactone (CAS 918159‑71‑4) is a functional cyclic ester monomer with formula C₁₄H₁₆O₄ (MW 248.28). It undergoes ring‑opening polymerization (ROP) to form biodegradable polyesters with pendant benzyl‑protected carboxyl groups, widely used in drug delivery, biomaterials, and functional polymer synthesis.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
![Ethyl (1R,8S,9S,Z)-bicyclo[6.1.0]non-4-ene-9-carboxylate](https://e1752fbe.rocketcdn.me/wp-content/uploads/AP10885-e1685948147603.png)
