Spectrum Chemical carries Dithiothreitol or DTT among its large inventory of fine chemicals and high quality ingredients. Also known as threo-1,4-Dimercapto-2,3-butanediol or Cleland’s reagent, DL-dithiothreitol acts as a cell permeable protective agent for Thiol groups. Keeps monothiols completely in the reduced state and reduces disulfides quantitatively. Effective in sample buffers for reducing protein disulfide bonds prior to SDS-PAGE.