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US 4,219,474 AGranted
Heterocyclic phenyl azo hydroxybenzenes
AssigneeWilliam H. Rorer, Inc.
InventorsJerome J. Zalipsky, Dahyabhai M. Patel
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Abstract
The following novel azo compounds, pharmaceutically acceptable salts and process for preparing the same are disclosed: 2-[(p-(2-pyridylsulfamoyl)phenyl)azo]hydroxybenzene; 3-[(p-(2-pyridylsulfamoyl)phenyl)azo]salicylic acid; and 5-[(p-(4-(2-pyridylanilino))-N-phenyl)azo]salicylic acid.
Claims1
A compound selected from the group consisting of 5-[(p-(4-(2-pyridylanilino))-N-phenyl)azo]salicylic acid and the sodium, potassium, aluminum, mono-, di-, and tri-ethanolamine and d-glucamine salts thereof.
Dependencies are inferred from the claim text.