2-AMINO-1-NAPHTHALENESULFONIC ACID

2-Amino-1-naphthalenesulfonic acid, commonly known as Tobias acid, is an organic compound featuring both an amino group and a sulfonic acid group on a naphthalene ring. It is one of several aminonaphthalenesulfonic acids and is primarily significant as a diazo component in the production of acid dyes and pigments.