4-Hydroxybenzoic acid, 25mg

4-Hydroxybenzoic acid (p-hydroxybenzoic acid, PHBA, para-Hydroxybenzoic acid, 4-hydroxybenzoate), also known as p-hydroxybenzoic acid (PHBA), is a phenolic derivative of benzoic acid and widely used in organic synthesis. It is the most widely distributed aromatic organic acid in the vegetable kingdom.