Avobenzone

**Semantic type:** Pharmacologic Substance

**Definition:** A sunscreen blocker. Avobenzone is a topical, broad range UV protector and blocks UVA I, UVA II, and UVB wavelengths, thereby limiting the impact of UV rays on skin. (NCI05)

**Synonyms:** - 1-(4-(1,1-Dimethylethyl)phenyl)-3-(4-methoxyphenyl)-1,3-propanedione - 1-(p-tert-Butylphenyl)-3-(p-methoxyphenyl)-1,3-propanedione - AVOBENZONE - Butyl Methoxydibenzoylmethane - Parsol 1789 - Shade UVAguard