4-(Dimethylamino)azobenzene-4'-arsonic acid 4-[4-(N,N-Dimethylaminophenylazo)]benzenearsonic acid 622-68-4 Arsonic acid, [4-[[4-(dimethylamino)phenyl]azo]phenyl]- Benzenearsonic acid, p-[[p-(dimethylamino)phenyl]azo]- NSC4189 [4-[[4-(DIMETHYLAMINO)PHENYL]AZO]PHENYL]ARSONIC ACID p-Dimethylaminophenylazophenylarsonic acid