AM1-44 is a version of AM1-43 with improved fixability. The dye can also be used as a general probe for following endocytosis. AM1-44 probe functions similarly as AM1-43, except that AM1-44 has lipophilic tails that are each one carbon longer than those of AM1-43, resulting in better fixability.    &lamba;Ex/&lamba;Em: 510/625 nm (in MeOH); 480/598 nm (in membranes)  Red solid soluble in water  C31H52Cl3N4  MW: 587.5