Salicylic acid is a beta hydroxy acid. It is an unsaturated omega-9 fatty acid and a hydroxy acid. A hydroxy or hydroxyl group is the entity with the formula OH. Higher pH levels and lower percentages of hydroxy acids are commonly used as home peels. In the presence of water, they slowly hydrolyze to the hydroxy sulfonic acids. Here he worked on the mechanism involved in the amino and hydroxy acid synthesis. Phenolics, sometimes called "phenols", consist of an aromatic 6-carbon ring bonded to a hydroxy group. Its molecular structure consists of a single carbon atom bonded to four hydroxy groups. Only one of the six hydroxy groups is oxidized by this enzymatic reaction. OH of atoms is the hydroxy group. Nickel azide forms a dihydrate&colon; Ni(N) and a basic salt called nickel hydroxy azide Ni(OH)N. The hydroxy group is pervasive in chemistry and biochemistry.