1,1-[1,2-Phenylenebis(methylene)]bis[4-methyl-pyridinium] dibromide
1,1'-(1,1'-Biphenyl)-4,4'-diylbis(4,5-dihydro-3,5-diphenyl)-(1H)-pyrazole
1,1'-BIS(4-SULFOPHENYL)-3,3'-DICARBOXY-5,5'-DIHYDROXYPYRAZOLO-4,4'-TRIMETHINE OXONOLE TETRASODIUM SALT
1,1'-BIS(4-SULFOPHENYL)-5,5'-DIHYDROXY-3,3',A-TRIMETHYLPYRAZOLO-4,4'-TRIMETHINE OXONOLE TRIPOTASSIUM SALT
