Ureylene naphthalene sulfonic acids

摘要

Ureylenebis-symmetrical-phenenylbiscarbonylimino-substituted phenylenecarbonylimino-tetranaphthalenepolysulfonic acid benzoic acid salts, and nitro- and amino-substituted phenylenebiscarbonylimino-substituted benzamido-phenylenedicarbonyl-dinaphthalenepolysulfonic acid benzoic acid salts which are intermediates for the preparation of the active ureides which have complement inhibiting activity.