As a member of Chinese phenolic acids, 3,4-dihydroxybenzoic acid is also a natural secondary metabolite, which is common in fruits, vegetables, hibiscus flowers, tea, and other foods and plants. At the same time, 3,4-dihydroxybenzoic acid is also the main internal metabolite of anthocyanins and other polyphenols. As a commodity on the market, 3,4-dihydroxybenzoic acid appears as a white-to-brown crystalline powder, soluble in hot water, ethanol, ether, acetone, and ethyl acetate. When storing 3,4-dihydroxybenzoic acid, we need to store it in a sealed container to avoid it being exposed to the air for a long time, to avoid color changes.
As a medical intermediate, 3,4-dihydroxybenzoic acid has a variety of biological activities and can play a variety of effects. For example, 3,4-dihydroxybenzoic acid can have an antibacterial effect on Streptococcus pneumoniae, Haemophilus influenzae, Staphylococcus Albicans, Staphylococcus aureus, Pseudomonas aeruginosa, Proteus, Escherichia coli, etc. It can also inhibit the metabolism of cancer cells, reduce their invasion ability, and promote the apoptosis of cancer cells. Thus achieving a certain anti-cancer effect.