(3S)-4-aminochloranuidyl-3-fluoro-2-methylbutan-2-ol;3-aminochloranuidyl-3-methyloxetane;6-chloro-N-[(2R)-2-fluoro-3-hydroxy-3-methylbutyl]-4-[(3-methyloxetan-3-yl)amino]pyridine-3-carboxamide;6-chloro-4-[(3-methyloxetan-3-yl)amino]pyridine-3-carboxylic acid;1-[6-chloro-4-[(3-methyloxetan-3-yl)amino]-3-pyridinyl]ethanone;6-(3-cyanopyrrolo[1,2-b]pyridazin-7-yl)-N-[(2R)-2-fluoro-3-hydroxy-3-methylbutyl]-4-[(3-methyloxetan-3-yl)amino]pyridine-3-carboxamide;1-(4,6-dichloro-3-pyridinyl)ethanone;7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrrolo[1,2-b]pyridazine-3-carbonitrile;iodide