2，5-二甲氧基4-氯苯胺

2,5 Di Chloro Phenol

3，5-di hydroxy aceto phenone

3,5-di-tert-butyl-4-hydroxytoluene

1,2:5,6-Di-o-isopropylidene-D-mannitol

3,5 Di-Tert Butyl Salicylic Acid

1,2:3,5-Di-o-isopropylidene-α-D-apiose

1,4 di methyl 2,5- dinitro benzene

2,5 di nitro p- xylene