3,3'-Dimethyldiphenylamine (CAS NO.626-13-1), its Synonyms are Benzenamine,3-methyl-N-(3-methylphenyl)- ; Di-m-tolylamine(7CI,8CI) ; Bis(3-methylphenyl)amine ; N,N-Bis(3-methylphenyl)amine ; m,m'-Ditolylamine .