N-Ethyl-N-(3-sulfobenzyl)sulfanilic Acid can be obtained from 3-Sulfobenzaldehyde Sodium Salt (S689165) which can be used for the preparation of a series of novel sulfonamide derivatives, as inhibitors of the enzyme histone deacetylase (HDAC) as a novel approach to the treatment of cancer. Molecular Formula: C15H17NO6S2 Molecular Weight: 371.43