The title compound is a soluble precursor (“latent pigment”) of diketopyrrolopyrrole pigment (DPP) that can be used for electronic and imaging applications. Two crystal forms (
J. Mizuguchi, "Polymorph of a Latent Pyrrolopyrrole Pigment: 1,4-Diketo-3,6-Diphenyl-Pyrrolo-[3,4-c]-Pyrrole" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP19), 2003, pp 665 - 668, https://doi.org/10.2352/ISSN.2169-4451.2003.19.1.art00053_2