1.14.11.26 ammonium chloride - 660936 1.14.11.26 ammonium sulfate - 660936 1.14.11.26 ascorbate - 440380 1.14.11.26 ascorbate required 660936, 744105 1.14.11.26 dithiothreitol - 440380, 662088 1.14.11.26 dithiothreitol up to 30% activation in presence of dithiothreitol 660936 1.14.11.26 glutathione reduced 662088