1,1'-Bi-1H-imidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetrakis(3-methoxyphenyl)- 2,2'-Bis(2-chlorophenyl)-4,4',5,5'-tetrakis(3-methoxyphenyl)-1,1'-bi-1H-imidazole 29777-36-4 37275-60-8 81814-21-3 EINECS 249-840-1