Treprostinil palmitil (TP) is the prodrug of DP1 and EP2 agonist, Treprostinil (UT-15), whose EC50 values were 0.6 and 6.2 nM, respectively. Treprostinil palmitil is a pure prodrug and possesses no inherent binding to G-protein coupled receptors including prostanoid receptors[1][2].
[1]. Chapman RW, Corboz MR, Malinin VS, Plaunt AJ, Konicek DM, Li Z, Perkins WR. An overview of the biology of a long-acting inhaled treprostinil prodrug. Pulm Pharmacol Ther. 2020 Dec;65:102002.