The present application is directed to processes and intermediates for making 4-({2-[(aminosulfonyl)amino]ethyl}amino)-N-(3-bromo-4-fluorophenyl)-N′-hydroxy-1,2,5-oxadiazole-3-carboximidamide, which is an inhibitor of indoleamine 2,3-dioxygenase, useful in the treatment of cancer and other disorders.La présente invention concerne des procédés et des intermédiaires de fabrication de 4-({2- [(aminosulfonyl) amino]éthyl}amino)-N-(3-bromo-4-fluorophényl)-N'-hydroxy-1,2,5-oxadiazole-3-carboximidamide, qui est un inhibiteur de l'indoleamine 2,3-dioxygénase, utiles dans le traitement du cancer et d'autres troubles.