6, 6'-Diphenylfulvene

6, 6'-Diselenobis-(3-nitrobenzoic acid)

6, 6'-Dithiobis(4-aminohexanoic acid) bis(trifluoroacetate)

6, 6'-Dithiodinicotinic acid

6, 6'-Ethylenebis(1, 3, 5-triazine-2, 4-diamine)

6, 6'-Methylene bis(2, 2, 4-trimethyl-1, 2-dihydroquinoline)

6, 6'-Methylenebis((3RS)-9-methyl-3-((2-methyl-1H-imidazol-1-yl)methyl)-1, 2, 3, 9-tetrahydro-4H-carbazol-4-one)

6, 6'-Methylenebis(1, 1, 3, 3-tetramethylindan-5-ol)

6, 6'-Methylenebis(2, 2-dimethyl-4-methanesulfonic acid-1, 2-dihydroquinoline)

6, 6'-Methylenebis(4-chloro-2-isopropyl-m-cresol)

6, 6'-Methylenebis(4-tert-butyl-o-cresol)

6, 6'-Methylenedi-2, 4-xylenol

6, 6'-Thiobis(2, 3-dihydro-1, 1, 3, 3-tetramethyl-1H-inden-5-ol)

6, 6'-Thiodipurine

6, 6, 16-Trifluorohexadecanoic acid

6, 6, 7, 7, 8, 8, 8-Heptafluoro-2, 2-dimethyl-3, 5-octanedione

6, 6, 7, 7, 8, 8, 8-Heptafluoro-2-methylocta-3, 5-dione

6, 6, 9-Trifluoro-11, 17, 21-trihydroxy-16-methyl-pregn-4-ene-3, 20-dione, (11beta, 16alpha)-

6, 6, 9-Trifluoro-11, 21-dihydroxy-16, 17-((1-methylethylidene)bis(oxy))pregna-1, 4-diene-3, 20-dione, (11beta, 16alpha)-

6, 6, 9a-Trifluoro-11beta, 16alpha, 17alpha, 21-tetrahydroxy-1, 4-pregnadien-3, 20-dione-21-acetate 16, 17-acetonide