A transaction terminal includes a housing, a touch screen, a card reader, an imaging module, and a decode circuit coupled to the imaging module. Especially, a kind of deuterated \u03c9-diphenylurea compounds which can inhibit phosphokinase and the preparation method of N-phenyl)-N\u2032–4-pridinyloxy)phenyl)urea are disclosed. The cover allows access to certain electronic components and prevents access to other electronic components.