Abstract: A class of asymmetric monobenzoxanthene compounds useful as fluorescent dyes are disclosed having the structure wherein Y1 and Y2 are individually hydroxyl, amino, imminium, or oxygen, R1-R8 are hydrogen, fluorine, chlorine, alkyl, alkene, alkyne, sulfonate, amino, amido, nitrile, alkoxy, linking group, and combinations thereof and R9 is acetylene, alkane, alkene, cyano, substituted phenyl, and combinations thereof. The invention further includes novel intermediate compounds useful for the synthesis of asymmetric benzoxanthene compounds having the general structure where substituents R3-R7 correspond to like-referenced substituents in the structure of described above, and Y2 is hydroxyl or amine. In another aspect the invention includes methods for synthesizing the above dye compounds and intermediates.

Abstract: A class of asymmetric monobenzoxanthene compounds useful as fluorescent dyes are disclosed having the structure wherein Y1 and Y2 are individually hydroxyl, amino, imminium, or oxygen, R1-R8 are hydrogen, fluorine, chlorine, alkyl, alkene, alkyne, sulfonate, amino, amido, nitrile, alkoxy, linking group, and combinations thereof, and R9 is acetylene, alkane, alkene, cyano, substituted phenyl, and combinations thereof. The invention further includes novel intermediate compounds useful for the synthesis of asymmetric benzoxanthene compounds having the general structure where substituents R3-R7 correspond to like-referenced substituents in the structure of described above, and Y2 is hydroxyl or amine. In another aspect, the invention includes methods for synthesizing the above dye compounds and intermediates.

Abstract: A class of asymmetric monobenzoxanthene compounds useful as fluorescent dyes are disclosed having the structure ##STR1## wherein Y.sub.1 and Y.sub.2 are individually hydroxyl amino, imminium, or oxygen, R.sub.1 -R.sub.8 are hydrogen, fluorine, chlorine, alkyl, alkene, alkyne, sulfonate, amino, amido, nitrile, alkoxy, linking group, and combinations thereof, and R.sub.9 is acetylene, alkane, alkene, cyano, substituted phenyl, and combinations thereof. The invention further includes novel intermediate compounds useful for the synthesis of asymmetric benzoxanthene compounds having the general structure ##STR2## where substituents R.sub.3 -R.sub.7 correspond to like-referenced substituents in the structure of described above, and Y.sub.2 is hydroxyl or amine. In another aspect, the invention includes methods for synthesizing the above dye compounds and intermediates.

Abstract: A class of asymmetric monobenzoxanthene compounds useful as fluorescent dyes are disclosed having the structure ##STR1## wherein Y.sub.1, and Y.sub.2 are individually hydroxyl, amino, imminium, or oxygen, R.sub.1 -R.sub.8 are hydrogen, fluorine, chlorine, alkyl alkene, alkyne, sulfonate, amino, amido, nitrile, alkoxy, linking group, and combinations thereof, and R.sub.9 is acetylene, alkane, alkene, cyano, substituted phenyl and combinations thereof The invention ftrther includes novel intermediate compounds useful for the synthesis of asymmetric benzoxanthene compounds having the general structure ##STR2## where substituents R.sub.3 -R.sub.7 correspond to like-referenced substituents in the structure of described above, and Y.sub.2 is hydroxyl or amine. In another aspect, the invention includes methods for synthesizing the above dye compounds and intermediates.