PROCESS FOR PRODUCING 10-PROPYL-2,8-BIS(1H-TETRAZOL-5-YL)-4H, 6H-BENZO(1,2-B;5,4-B)DIPYRAN-4,6-DIONE CALCIUM SALT

摘要

There is described the calcium salt of 10-propyl-2,8-bis(1H-tetrazol-5-yl)-4H,6H-benzo(1,2-b;5,4-b min )dipyran-4,6-dio ne and processes for its preparation. Also described are pharmaceutical compositions containing the calcium salt and methods of treatment involving its use.