1226-46-6 4,4'-Bis(dimethylamino)thiobenzophenone Benzophenone, 4,4'-bis(dimethylamino)thio- Methanethione, bis[4-(dimethylamino)phenyl]- Michler's thioketone Michler's thione NSC30656 p,p'-Bis(dimethylamino)thiobenzophenone