Methanone,bis(4-hydroxyphenyl)- ,its cas register number is 611-99-4. It also can be called?4,4'-Dihydroxybenzophenone
4,4'-Dihydroxydiphenyl ketone ; 4-08-00-02452 (Beilstein Handbook Reference) ; AI3-00127 ; Bis(4-hydroxyphenyl) ketone ; Bis(p-hydroxy)benzophenone ; HBP (ketone)?; NSC 2831 ; p,p'-Dihydroxybenzophenone .?Methanone,bis(4-hydroxyphenyl)- (CAS NO.611-99-4) is a?off-white to beige fine crystalline powder.