(R)-tert-Butyl (4-(2-((4-(2-((2-Hydroxy-2-phenylethyl)amino)ethyl)phenyl)amino)-2-oxoethyl)thiazol-2-yl)carbamate is an intermediate for the synthesis of 2-Oxo-mirabegron N-Carbamoylglucuronide (O857900), which is a metabolite of Mirabegron (M364900) which is a potent bladder relaxant and reagent for diabetes remedy.