2,5-DIETHYL-3,4-DIPHENYLCYCLOPENTADIENONE

2,5-DIFLUORO-DL-PHENYLALANINE

2,5-Difluoronitrobenzene

2,5-DIHYDROXY-1,4-BENZOQUINONE

2,5-Dihydroxybenzaldehyde

2',5'-DIHYDROXYPROPIOPHENONE

2',5'-DIHYDROXYPROPIOPHENONE

DIETHYL 2,5-DIHYDROXYTEREPHTHALATE

DIETHYL 2,5-DIHYDROXYTEREPHTHALATE