5(6)-Caroxyrhodamine 6G cadaverine

5(6)-Caroxyrhodamine 6G cadaverine is a building block for developing rhodamine bioconjugates. It is so a fluorescent transglutaminase substrate to label proteins by transaminidation. In general, rhodamine 6G conjugates have higher fluorescence quantum yields than tetramethylrhodamine conjugates, as well as good photostability. The excitation and emission wavelengths of rhodamine 6G fall between those of fluorescein and tetramethylrhodamine derivatives, making 5(6)-CR6G another color choice for the multicolor fluorescence imaging applications. 5(6)-CR6G is the mixture of two carboxy rhodamine 6G isomers.