Ureylene phenylene anionic naphthalenesulfonic acids

摘要

Novel ureylenebis[substituted-phenylenecarbonyl(and sulfonyl)imino-subsituted-phenylenesulfonylimino-naphthalenetrisulfonic acid hexaalkali metal salts], useful as inhibitors of the complement system of warm-blooded animals, the amino-substituted phenylenecarbonyl(and sulfonyl)imino-substituted-phenylenesulfonylimino-naphthalenetrisulfonic acid, trialkali metal salts, which are new intermediates for the preparation of the active ureylenes, and the process for their preparation.