4,4'-Biphenol
4,4'-Oxydianiline
4,4'-Methylenedianiline
4,4'-Bipyridine
4,4'-Diapophytoene desaturase
4,4'-Dihydroxybenzophenone
4,4'-Dimethylaminorex
4,4'-Thiodianiline
4,4'-Dichlorodiphenyl sulfone
4,4'-Methylenebis(2-chloroaniline)
4,4'-Dichlorobenzophenone
Disodium 4,4'-dinitrostilbene-2,2'-disulfonate
2,2',3,3',4,4'-Hexachlorobiphenyl
4,4'-Difluorobenzophenone
4,4'-Diapophytoene synthase
4,4'-Diaminodicyclohexylmethane
Benzidine
4,4′-Diamino-2,2′-stilbenedisulfonic acid
3,3',4,4'-Benzophenone tetracarboxylic dianhydride
Methylene diphenyl diisocyanate
Methade
Diapolycopene oxygenase
4,4'-Azobis(4-cyanopentanoic acid)
4,4'-Dinitro-3,3'-diazenofuroxan
4,4′-(Hexafluoroisopropylidene)diphthalic anhydride
DIDS
Stilbestrol
Delta14-sterol reductase
4,4'-Bis(dimethylamino)benzhydrol
Chalcone 4'-O-glucosyltransferase
Methylsterol monooxygenase
Variegatic acid
Phloretin hydrolase
Michler's ketone
Aureusidin synthase
Tetrabromobisphenol A
3,3'-Diaminobenzidine
Bisphenol S
Orellanine
Paraquat
Bisphenol A
3,3'-Dichlorobenzidine
Hexestrol dipropionate
MC21-B
Bicinchoninic acid
Methadone intermediate
Neosalvarsan
Flavokavain A
Chlorobenzilate
Tolidine
Ellagic acid
Bromocresol purple
Arsphenamine