4DFF:
reference: The SAR development of dihydroimidazoisoquinoline derivatives as phosphodiesterase 10A inhibitors for the treatment of schizophrenia., Ho GD, Michael Seganish W, Bercovici A, Tulshian D, Greenlee WJ, Van Rijn R, Hruza A, Xiao L, Rindgen D, Mullins D, Guzzi M, Zhang X, Bleickardt C, Hodgson R, Bioorg Med Chem Lett. 2012 Feb 9. PMID: 22377514

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