1-(4-benzoylpiperazin-1-yl)-2-(7-bromo-4-methoxy-1H-pyrrolo[2,3-c]pyridin-3-yl)ethane-1,2-dione is a Fostemsavir (864953-29-7) intermediate and an antiviral agent. It is also involved in the synthesis of the HIV-1 attachment inhibitor pro-drug, BMS-663068.