Fmoc-AEEA-OH (CAS No. 166108-71-0, molecular formula C₂₁H₂₃NO₆) is a white to beige solid used in peptide synthesis as a hydrophilic spacer with an Fmoc-protected amino group. It allows controlled chain extension during solid-phase synthesis and is commonly used in the preparation of GLP-1 receptor agonists such as Semaglutide and Tirzepatide. The compound is supplied in 25 kg fiber drums and should be stored under inert atmosphere at room temperature to ensure stability.
- CAS No.: 166108-71-0
 - Molecular Formula: C₂₁H₂₃NO₆
 - Purity: 99% min
 

                                                
                                                
                                                