Dihydrorhodamine 123

Pinkish-white solid. Soluble in DMSO, DMF or ethanol. Dihydrorhodamine 123 is the uncharged and nonfluorescent reduction product of the mitochondrion-selective dye rhodamine 123. Dihydrorhodamine 123 has been used to investigate reactive oxygen intermediates produced by human and murine phagocytes, activated rat mast cells and cultured endothelial cells. In addition, dihydrorhodamine 123 has been used together with Fura Red calcium indicator to simultaneously measure oxidative bursts and Ca2+ fluxes in monocytes and granulocytes. Dihydrorhodamine 123 has been shown to be a more sensitive probe than H2DCFDA for detecting granulocyte respiratory bursts.