Diisopropylammonium 2 2 2-trifluoroacetate July 8, 2019 16 32 64 128 Diisopropylammonium 2 2 2 trifluoroacetate 2 2-difluoro-2-(triphenylphosphonio)acetate 2 2-difluoro-2-(fluorosulfonyl)acetic acid