1-Bromo-4-cyclopropylbenzene-d4 is the labelled compound form of 1-Bromo-4-cyclopropylbenzene(B682700) which is a reagent used in the synthesis of sodium-dependant glucose transporter inhibitors. Also used in the synthesis of Tofoglifozin, a novel selective sodium glucose cotransporter 2 inhibitor (SGLT2).