Provided are a coloring composition capable of producing a film having fewer defects generated, and the like even in a case where the coloring composition is stored for a long period of time in an environment with variations in temperature, a color filter, a pattern forming method, a solid-state imaging device, and an image display device. The coloring composition includes a heterocycle-containing coloring agent such as a compound represented by Formula (1), a phthalimide compound, a solvent, and a resin. In Formula (1), R.sup.1 to R.sup.13 each independently represent a hydrogen atom or a substituent, and adjacent groups of R.sup.1 to R.sup.8 may be bonded to each other to form a ring, provided that at least one of the pairs of adjacent two groups of R.sup.1 to R.sup.8 is bonded to each other to form an aromatic ring.

##STR00001##

The present disclosure is directed to a reactive ester agent capable of conjugating a reporter molecule to a carrier molecule or solid support. The reactive ester agent has the general formula: ##STR00001##
wherein the variables are described throughout the application.

The present disclosure is directed to a reactive ester agent capable of conjugating a reporter molecule to a carrier molecule or solid support. The reactive ester agent has the general formula: ##STR00001##
wherein the variables are described throughout the application.