拖船891产品是TUG-891 is a potent GPR120 (free fatty acid receptor 4; FFAR4) agonist (pEC₅₀ values are 7.36 and 7.77 for human and mouse GPR120 respectively). Selective for GPR120 over free fatty acid receptors (pEC₅₀ = 4.19 for FFA1; displays no activity at FFA2 or FFA3).