What is "felbinac"

n. biphenylylacetic acid, a nonsteroidal anti-inflammatory drug of the arylpropionic acid class, used to treat muscle inflammation and arthritis

Felbinac ( INN, or biphenylylacetic acid) is a topical medicine, belonging to the family of medicines known as non-steroidal anti-inflammatory drugs (NSAIDs) of the arylacetic acid (not arylpropionic acid) class, which is used to treat muscle inflammation and arthritis. It is an active metabolite of fenbufen.