Dihydroxybenzoic acid

2,4-Dihydroxybenzoic acid structure

Dihydroxybenzoic acid refers to any of several isomeric organic compounds with the formula C_H_O_. These compounds are benzoic acids substituted with two hydroxyl groups. They are important in various biological and chemical processes and have applications in pharmaceuticals and other industries.

Isomers

Dihydroxybenzoic acids have several isomers, depending on the positions of the hydroxyl groups on the benzene ring. The most common isomers include:

• 2,3-Dihydroxybenzoic acid
• 2,4-Dihydroxybenzoic acid
• 2,5-Dihydroxybenzoic acid
• 2,6-Dihydroxybenzoic acid
• 3,4-Dihydroxybenzoic acid
• 3,5-Dihydroxybenzoic acid

Each isomer has unique properties and applications.

2,4-Dihydroxybenzoic acid

2,4-Dihydroxybenzoic acid, also known as _-resorcylic acid, is one of the isomers of dihydroxybenzoic acid. It is characterized by hydroxyl groups at the 2 and 4 positions on the benzene ring.

Properties

2,4-Dihydroxybenzoic acid is a white crystalline solid that is soluble in water. It has a melting point of approximately 200°C. The presence of two hydroxyl groups makes it more acidic than benzoic acid.

Applications

This compound is used in the synthesis of various pharmaceuticals and dyes. It also serves as an intermediate in the production of other chemical compounds.

Biological significance

Dihydroxybenzoic acids are found in nature as part of the shikimate pathway, which is a biosynthetic route used by plants and microorganisms to produce aromatic amino acids. They also play a role in the metabolism of certain bacteria and fungi.

Related pages

• Benzoic acid
• Hydroxybenzoic acid
• Salicylic acid
• Phenolic compounds