Methyl violet CAS 603-47-4

Preparation method: (1) 4,4′-bis(dimethylamino) benzophenone is condensed with N,N-dimethylaniline and PCl3; (2)N,N-dimethylbenzene Chemicalbook amine exists in the presence of ZnCl2 (3) Condensation of bis(dimethylamino)diphenylmethanol with N,N-dimethylaniline, and the obtained product is oxidized again.