Synonyms: Benzophenone,4,4''-(tetramethylenedioxy)bis[2-hydroxy- (8CI); Methanone, [1,4-butanediylbis[oxy(2-hydroxy-4,1-phenylene)]]bis[phenyl-(9CI); 1,4-Bis(3-hydroxy-4-benzoylphenoxy)butane;1,4-Bis(4-benzoyl-3-hydroxy)phenoxybutane;4,4''-(Tetramethylenedioxy)bis(2-hydroxybenzophenone); Seesorb 151