이 원료는 다음의 구조를 갖는 방향족 유기화합물이다.

(.+-.)-1,7,7-trimethyl-3-[(4-methylphenyl)methylene]bicyclo[2.2.1]heptan-2-one: A UV filter not approved as an active ingredient for sunscreen in the U.S., but listed as an inactive ingredient in some products. European researchers cite concerns over thyroid toxicity, hormone disruption, and recommend the chemical not be used in sunscreen.

本品は、次の化学式で表される芳香族化合物である。