The present invention provides a compound having a high chroma and also excellent dispersibility. The compound described above is represented by the following formula (1). ##STR00001##

The present invention provides a compound having a high chroma and also excellent dispersibility. The compound described above is represented by the following formula (1).

##STR00001##

A thermal transfer recording sheet set includes an image-receiving sheet that includes an image-receiving layer containing a compound represented by general formula (1) or (2) and an ink sheet that includes a yellow coloring material layer containing a particular dye and a cyan coloring material layer containing a particular dye.

A lightfast orange color compound is provided. The compound has a structure including a pyrazolone ring and a thiazole ring that are bound to each other.

An object of the present invention is to provide a thermal transfer recording sheet that enables images having a wide color gamut, a high chroma, and good lightfastness, in which the degree of catalytic fading is reduced, to be formed. The thermal transfer recording sheet includes a base material and a colorant layer on the base material. The colorant layer includes a yellow dye layer, a magenta dye layer, and a cyan dye layer. The dye layers each include, as a dye, a compound having a specific structure.