| 摘要 |
The subject matter of the invention are new xanthene derivatives of the formula I,wherein R1,R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, and X, Y, are as defined herein. The compounds according to the invention provide molecules that are-due to their spectral properties (absorption maxima in the range of approx. 650 nm and above as well as emission maxima above 670 nm)-very suitable for the use as dyes and in particular as fluorescence dyes. The compounds of the formula I according to the invention are used for the production of fluorescence conjugates, for their application in immunoassays, for DNA analytics, for in-vivo diagnostics or as a laser dye.
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