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6，6'-Dimethyl-2，2'-dipyridyl

4，4'-Di-|tert|-butyl-2，2'-dipyridyl

DL-α-Methoxyphenylacetic acid

4，7-Dihydroxy-1，10-phenanthroline

4，4'-Dinonyl-2，2'-dipyridyl

Dicyclohexano-18-crown-6

4，4'-Dihydroxydiphenyl ether

3，5-Dichloro-4-pyridone-1-acetic acid

2，6-Dichloropyridine-4-carboxylic acid

2，3-Dichloropyridine

3，5-Dichloropyridine

3，6-Dibromo-9-phenylcarbazole

2，7-Dibromo-9，9'-spirobifluorene

(+)-Dibenzoyl-D-tartaric acid monohydrate

(-)-Dibenzoyl-L-tartaric acid monohydrate

(+)-Diethyl L-tartrate

Decafluorobiphenyl

4-(Dimethylcarbamoyl)benzeneboronic acid

4-(Dimethylamino)phenylboronic acid

4-(Diphenylamino)phenylboronic acid

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