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.
该发明提供了I-VII式化合物和组合物,并提供使用这些化合物的方法。这些化合物可以用于制备
染料共轭物,这些共轭物在蛋白质、核酸或其他
生物高分子上的荧光均匀且明显更强,比已知的结构类似的碳
氰染料标记的共轭物更强。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,以及在与
生物高分子共轭时吸收光谱中的伪迹减少之外,这些化合物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。