SALT OF 2,8-DICARBOXY-4,6-DIOXY-10-PROPYL-4H,6H- BENZO(1,2-B:5,4-B')DIPYRAN

摘要

BA 49761/77 SALTS There is described a salt of 2,8-dicarboxy-4,6-dioxo-10-propyl-4H,6H-benzo(1,2-b:5,4-b')dipyran with a pharmaceutically acceptable organic cation, the salt having a solubility of less than 3% w/w in water a 20.5.degree.C. There are also described processes for making the salts and pharmaceutical, e.g. anti-allergic, compositions containing them.