C20-OtBu-Glu-OtBu 1119061-70-9 C20-OtBu-Glu-OtBu (CAS 1119061-70-9), also known as N-(eicosanedioic acid mono-tert-butyl ester)-L-glutamic acid di-tert-butyl ester or C20 fatty diacid-Glu (fully tBu protected), is a fatty acid-amino acid conjugate that has two protective groups on it. The eicosanedioic acid (octadecanedioic acid — C20 diacid, OtBu-protected at one end) and L-glutamic acid (di-tBu-protected at both the α and γ positions) are linked together by an amide bond to make the part of the tirzepatide lipid anchor that is closest to the body.
ApiSyn sells C20-OtBu-Glu-OtBu (CAS 1119061-70-9) as a pharmaceutical-grade specialty building block for lipid side chain assembly, incretin peptide research, and analytical reference applications.
| Chemical Name | (S)-5-(tert-butoxy)-4-(20-(tert-butoxy)-20-oxoicosanamido)-5-oxopentanoic acid |
| Molecular Formula | C33H61NO7 |
| Molecular Weight | 583.9 |
| CAS Number | 1119061-70-9 |