| abstract |
There is disclosed an aminobenzenesulfonic acid derivative of the formula:n wherein R₁ represents hydrogen atom, a C₁ - C₆ alkyl group, a C₃ - C₇ cycloalkyl group, a C₁ - C₄ halogenated alkyl group, a halogen atom or a C₆ - C₁₂ aryl group, R₂ represents hydrogen atom, a C₁ - C₆ alkyl group or a C₇ - C₁₂ aralkyl group which may have at least one substituent selected from cyano group, nitro group, C₁ - C₆ alkoxy groups, halogen atoms, C₁ - C₆ alkyl groups and amino groups, and n represents an integer of 1 to 4, nor a pharmaceutically acceptable salt thereof. |