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Didefluoro nebivolol

2,3-Didehydro gibberellin a9

3,4-Didehydroretinoic acid

11-Cis-3,4-didehydro retinal

11,12-Didehydro retinol

9,10-Didehydro cabergoline

Dideiodo amiodarone

Dideiodo amiodarone hydrochloride

(S)-didemethylamino citalopram carboxylic acid

Rac didemethyl citalopram hydrochloride