In the crystal structure of the title compound. C17H17ClN4O. the existence of only one 2-imino–oxo of the five possible N-amino–imino/O-keto–hydroxy tautomers is observed and the dihedral angle between the aromatic rings is 29. 78 (11)°. https://www.markbroyard.com/best-flash-pp-aluminum-lotion-pump-supply-amazing-save/