C18H14O4

C18H14O4 is the molecular formula for a compound that can exist in several isomeric forms. One common isomer with this formula is benzophenone-4, also known as oxybenzone-4 or solasulfone. This compound is a derivative of benzophenone and is characterized by the presence of a sulfonate group and a hydroxyl group on the benzophenone structure. It is a pale yellow solid that is soluble in water and many organic solvents.

Benzophenone-4 is primarily used as a UV filter in sunscreens and other personal care products. It absorbs ultraviolet radiation, particularly in the UV-A and UV-B ranges, and dissipates the energy as heat, thereby protecting the skin from sun damage. Its efficacy and safety have been evaluated by regulatory bodies worldwide.

Other isomers with the molecular formula C18H14O4 exist, each with a unique arrangement of atoms and consequently, different physical and chemical properties. For instance, derivatives of oxalic acid or phthalic acid could also possess this empirical formula. However, benzophenone-4 is the most widely recognized and utilized compound associated with C18H14O4 due to its significant application in the cosmetic and pharmaceutical industries. Research continues to explore the properties and potential applications of various isomers of this molecular formula.