Structurally, boronic acid compound is a trivalent boron-containing organic compound with alkyl substituent and hydroxyl groups to fill the valence on the boron atom. Due to the electron deficiency, the sp2-hybridized boron atom possesses an empty p-orbital. This low-energy orbital is orthogonal to three substituents. Unlike carboxylic acids and their carbon analogues, boronic acids do not exist in nature. Learn more: https://www.alfa-chemistry.com/products/boronic-compounds-115.htm