5-(and-6)-Carboxyrhodamine 110, SE (5-(and-6)-Carboxyrhodamine 110, succinimidyl ester, mixed isomers), also known as Carboxyrhodamine 110-NHS, is a superior green fluorescent dye that readily reacts with primary or secondary amines. For many applications, the dye is preferred over 5-(and-6)-carboxyfluorescein succinimidyl ester (5(6)-FAM) or FITC because of its exceptional photostability and fluorescence insensitivity to pH between 4-9.    &lamba;Ex/&lamba; Em(MeOH) = 502/524 nm  Orange red solid soluble in DMF or DMSO  Store at -20°C and protect from light  C25H17N3O7  MW:471.42