"Erythro-1,4-dimercapto-2,3-butanediol" . . . . "Erythro-2,3-dihydroxy-1,4-butanedithiol" . . "2,3-Dihydroxybutane-1,4-dithiol" . . . . . "Cleland's reagent (also used for DTT)" . "(2R,3S)-1,4-Bis(sulfanyl)butane-2,3-diol" . "(2R,3S)-1,4-Dimercaptobutane-2,3-diol (no longer recommended)" . . . . "Dithioerythritol" . . . . "dithioerythritol" . "Dithioerythritol" . . . .