2-(but-2-ynyl)-2-(4-fluorophenyl)hex-4-ynoic acid

(R,E)-(5-(bromomethylene)-2-oxo-3-(prop-2-ynyl)tetrahydrofuran-3-yl)methyl 4-bromobenzoate

4,4-bis[isopropylidene-2,2-(bis(methoxy)propionyloxy)methyl]-1,6-heptadiyne

4,4-bis[(benzyloxy)methyl]-1,7-bis(trimethylsilyl)-1,6-heptadiyne

4,4-bis(t-butyldimethylsilyloxymethyl)-1,6-heptadiyne