3,4-dihydroxybenzoic acid is a kind of phenolic acid compound, as well as a simple phenolic acid, naturally occurring in nuts, fruits, vegetables, tea, brown rice, hibiscus, hickory and some Chinese herbs. The molecular formula of 3,4-dihydroxybenzoic acid is C7H6O4 , its molecular weight is 154.12, and its CAS number is 99-50-3. EINECS no. 202-760-0.
3,4-dihydroxybenzoic acid is a precursor for the synthesis of various complex molecules, such as vanillin and anthocyanin 3-O-β -D-glucoside. 3,4-dihydroxybenzoic acid can play a variety of biological activities on different molecular targets, play antibacterial, anti-inflammatory, antioxidant and potential chemical protection, can inhibit chemical carcinogens, cell apoptosis and proliferation, therefore, 3,4-dihydroxybenzoic acid can be used in the medical field for the treatment of acute pancreatitis, acute pyelonephritis, dysentery, burn, pneumonia in children and some ulcer diseases.