use of 9 - chlorine - 7 - (1h - tetrazol - 5 - yl) - 5 - oxo - 1h benzopyrano 2, 3 - b pyridine and its salts and hydraten in the treatment of rheumatic complaints

摘要

A method of treating rheumatism which comprises administration of 9-chloro-7-(1H-tetrazol-5-yl)-5-oxo-5H-[1H]benzopyrano[2,3-b]pyridine, and its salt and its hydrate.