Tirzepatide intermediate, Tirzepatide side chain, CAS No. 1188328-37-1

Tirzepatide is a GIP receptor and GLP-1 receptor agonist. It is a 39-amino-acid modified peptide with a C20 fatty diacid moiety that enables albumin binding and prolongs the half-life. Tirzepatide selectively binds to and activates both the GIP and GLP-1 receptors, the targets for native GIP and GLP-1.

Tirzepatide enhances first- and second-phase insulin secretion, and reduces glucagon levels, both in a glucose dependent manner.

This Tirzepatide intermediate, CAS No. 1188328-37-1, is a side chain of Tirzepatide. The IUPAC name is 2-[2-[2-[[2-[2-[2-[[(4S)-5-[(2-methylpropan-2-yl)oxy]-4-[[20-[(2-methylpropan-2-yl)oxy]-20-oxoicosanoyl]amino]-5-oxopentanoyl]amino]ethoxy]ethoxy]acetyl]amino]ethoxy]ethoxy]acetic acid.

Abbreviated as C20-OtBu-Glu(OtBu)-AEEA-AEEA-OH, it contains the C20 fatty acid and the AEEA linker, and it is further to be conjugated with Lysine.