Abstract

The quinoxaline moiety in the title mol-ecule, C18H17N3O2, is not quite planar and the p-tolyl group is rotationally disordered over two nearly equally populated sets of sites. In the crystal, N-H⋯O and C-H⋯O hydro-gen bonds form chains extending along the b-axis direction. Due to the disorder of the p-tolyl rings, short C⋯C distances are observed between adjacent chains.

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