Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A new sulfur-transfer reagent, bis(ethoxythiocarbonyl)tetrasulfide (1), has been prepared and used for the synthesis of oligonucleotide phosphorothioates via solid phase phosphoramidite approach. ... A new sulfur-transfer reagent, bis(ethoxythiocarbonyl)tetrasulfide (1) has ...