Azo dye compound, coloring composition, ink sheet for thermal transfer recording, thermal transfer recording method, color toner, ink for inkjet, and color filter
An azo dye of the following formula: n n nwherein R 1 , R 2 , R 4 and R 5 represent a hydrogen atom or a substituent; R 3 and R 6 each independently represent a substituent; n indicates 0 to 3. The dye has an excellent optical characteristic with sharp absorption and excellent fastness.