3,4-dihydroxybenzoic acid is a kind of phenolic acid which naturally exists in many fruits and vegetables, and also exists in many traditional Chinese medicines such as hibiscus hibiscus and salvia miltiorrhiza as an effective active ingredient. The molecular formula of 3,4-dihydroxybenzoic acid is C7H6O4, the molecular weight is 154.12, and the CAS number is 99-50-3.
Currently on the market, 3, 4 – dihydroxybenzoic acid, the appearance of white to brown crystalline powder, exposed to the air is changing its color. 3,4-dihydroxybenzoic acid turns blue-green in color if encountered in aqueous solution of ferric chloride.
3,4-dihydroxybenzoic acid can not only play analgesic, antibacterial, reduce oxygen consumption, anti-platelet aggregation, slow heart rate, improve myocardial oxygen tolerance and other functions, but also can protect nerves, anti-tumor, anti-oxidation, etc.
Storage of 3,4-dihydroxybenzoic acid should be sealed and kept from light, cool and dry.