The carbocyanine dye DiIC₁(5) has been used to measure mitochondrial membrane potentials in apoptotic cells. Loss of membrane potential in apoptotic cells is reflected by a decrease of fluorescence signal in the infrared channel.

• l_ex\l_em (MeOH) = 638/ 658nm
• Dark green solid soluble in DMSO or DMF
• Store at -20?C and protect from light
• C₂₇H₃₁IN₂
• Mwt: 510.46