Potassium hydrogen-5-amino-4-hydroxybenzene-1,3-disulphonate

Potassium hydrogen-5-amino-4-hydroxybenzene-1,3-disulphonate is an aromatic sulfonate salt used as an intermediate in the synthesis of dyes. It contains both amino and hydroxyl substituents on a benzene ring with two sulfonate groups, contributing to its water solubility and reactivity.