The invention provides compounds and compositions of Formulas I-VII, and methods of using the compounds. The compounds can be used to prepare dye conjugates that are uniformly and substantially more fluorescent on proteins, nucleic acids or other biopolymers, than conjugates labeled with structurally similar known carbocyanine dyes. In addition to having more intense fluorescence emission than structurally similar dyes at virtually identical wavelengths, and decreased artifacts in their absorption spectra upon conjugation to biopolymers, the compounds can have greater photostability and/or higher absorbance (extinction coefficients) at the wavelength(s) of peak absorbance than such structurally similar dyes.
本发明提供了公式I-VII的化合物和组合物,以及使用这些化合物的方法。这些化合物可用于制备
染料共轭物,其在蛋白质、核酸或其他
生物聚合物上的荧光均匀且明显增强,相比与结构类似的已知碳
氰染料标记的共轭物。除了在几乎相同的波长下比结构类似的
染料具有更强的荧光发射,以及在共轭到
生物聚合物时吸收光谱中具有更少的伪迹外,这些化合物还可以在波峰吸收的波长处具有更高的光稳定性和/或吸光度(消光系数)比这些结构类似的
染料更高。