2,3-Di-(4-nitrophenyl)-5-phenyl-2H-tetrazolium 2,3-Di-(4-nitrophenyl)-5-phenyl-2H-tetrazolium bromide 2,3-Di-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride 2H-Tetrazolium, 2,3-bis(4-nitrophenyl)-5-phenyl-, bromide 90376-02-6 p-Dntt-Br p-Dnttc