4,4'-DIBROMOTRIPHENYLMETHANOL

4,4'-DIETHYLAZOXYBENZENE

4,4'-DIMETHYLENEBIS(METHYL BENZOATE)

4,4'-DISULFANEDIYLDIBENZONITRILE

4,4'-METHYLENEBIS(1-BUTYL-3-PHENYLUREA)

4-NITROBENZYL THIOCYANATE

4-Nitrophenyl octanoate

4-Nitrophenyloxamic acid

4,4'-METHYLENEBIS(PHENYLUREA)

4,4'-PENTAMETHYLENEBIS(ACETOPHENONE)

4,4'-TRIMETHYLENEBIS(METHYL PHENYLPROPIONATE)

4,4-DIACETYL-HEPTANEDIOIC ACID DIMETHYL ESTER

4-oxo-4-(10H-phenothiazin-2-yl)butanoic acid

4-OXO-4-PHENYL-2-PHENYLAMINO-BUT-2-ENOIC ACID METHYL ESTER

4-oxo-N,4-diphenylbutanamide