Monoamine compound, charge transport material, composition for charge transport film, organic electroluminescent element, organic el display, and organic el lighting
A monoamine compound characterized by being represented by the following general formula (1). n n n n n n n n n n [In general formula (1), R 1 to R 3 each independently represent a phenyl group which may have a substituent in at least one of o- and m-positions, in which the substituent may be bonded to each other to form a cyclic structure. R 1 to R 3 are a group different from each other.]