4', 5'-Dichlorofluorescein

4', 5'-Dichlorofluorescein disodium

4', 5'-Didehydro-5'-deoxy-5'-fluoroadenosine

4', 5'-Dihydro-1-isopropyl-4-methylspiro(bicyclo(2.2.2)oct-5-ene-2, 3'(2'H)-furan)

4', 5'-Dihydro-4-isopropyl-1-methylspiro(bicyclo(2.2.2)oct-5-ene-2, 3'(2'H)-furan)

4', 5'-Dihydrocefradine

4', 5'-Dihydropsoralen

4', 5'-Dimethoxy-6-carboxyfluorescein

4', 5'-Dimethyl-5-carboxyfluorescein

4', 5'-Dimethylazapsoralen

4', 5'-Dimethylfluorescein

4', 5'-Dimethylfluorescein isothiocyanate

4', 5'-Dithiopyridoxine

4', 5, 6, 7-Tetramethoxyflavone

4', 5, 7-Tri-O-(beta-hydroxyethyl)rutoside

4', 5, 7-Trihydroxy-3, 6-dimethoxyflavone

4', 5, 7-Trihydroxy-6'-methoxyflavanone

4', 5, 7-Trimethoxyisoflavone

4', 5-Dichloro-2-hydroxy-3-methylbenzophenone

4', 5-Dichloro-2-hydroxychalcone