2,5-Dichloro-1,4-phenylenediamine

2,5-二氯-1,4-苯二胺

2',4'-Difluoroacetophenone

2',4'-二氟苯乙酮

N,O-Dimethylhydroxylamine Hydrochloride

N,O-二甲基羟胺盐酸盐

4,4'-Dibromotriphenylamine

4,4'-二溴三苯胺

2,4-Dinitroiodobenzene

2,4-二硝基碘苯

trans,trans-2,4-Decadienal

反,反-2,4-癸二烯醛

2,4-Dimethyl-2,4-pentanediol

2,4-二甲基-2,4-戊二醇

Ethyl 3,3-Diethoxypropionate

3,3-二乙氧基丙酸乙酯

Dimethyldioctadecylammonium Bromide

双十八烷基二甲基溴化铵

1,2-Dibromo-1,1,2,2-tetrachloroethane

1,2-二溴-1,1,2,2-四氯乙烷