![Picture of Fmoc-L-Lys[Oct-(OtBu)-Glu-(OtBu)-AEEA-AEEA]-OH](https://apisyn.com/images/thumbs/0002428_fmoc-l-lysoct-otbu-glu-otbu-aeea-aeea-oh_550.webp "Picture of Fmoc-L-Lys[Oct-(OtBu)-Glu-(OtBu)-AEEA-AEEA]-OH")
Fmoc-L-Lys[Oct-(OtBu)-Glu-(OtBu)-AEEA-AEEA]-OH 1662688-20-1 Fmoc-L-Lys[Oct-(OtBu)-Glu-(OtBu)-AEEA-AEEA]-OH (CAS 1662688-20-1) is a complex Fmoc-lysine side chain building block bearing an octanedioic acid (C8 dicarboxylate, tBu-protected) — glutamic acid (OtBu-protected) — bis-AEEA linker, belonging to the fatty diacid-aminoethyloxy-Fmoc-Lys side chain class. This compound is an advanced SPPS building block for making Semaglutide (CAS 910463-68-2) or GLP-1 analogues that are very similar to it using a C8-based partial linker strategy. Some important impurities are incomplete deprotection products, des-AEEA truncations, and variants with mismatched fatty acid chains.
ApiSyn sells Fmoc-L-Lys[Oct-(OtBu)-Glu-(OtBu)-AEEA-AEEA]-OH (CAS 1662688-20-1) as a pharmaceutical-grade SPPS building block for making and testing GLP-1 peptides.
| Chemical Name | (23S,50S)-50-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-23-(tert-butoxycarbonyl)-2,2-dimethyl-4,21,26,35,44-pentaoxo-3,30,33,39,42-pentaoxa-22,27,36,45-tetraazahenpentacontan-51-oic acid |
| Molecular Formula | C64H101N5O16 |
| Molecular Weight | 1196.5 |
| CAS Number | 1662688-20-1 |