The enzyme chondro-4-sulfatase (EC 3.1.6.9) catalyzes the reaction
This enzyme belongs to the family of hydrolases, specifically those acting on sulfuric ester bonds. The systematic name is 4-deoxy-ò-<small>D</small>-gluc-4-enuronosyl-(1âÂÂ3)-N-acetyl-<small>D</small>-galactosamine-4-sulfate 4-sulfohydrolase. This enzyme is also called chondroitin-4-sulfatase.