title: Anticoccidials. IV A convenient synthesis of 2(1H)-pyrazinone 4-oxide derivatives.
mesh_terms: D000818:Animals; D002645:Chickens; D003049:Coccidiostats / Q000138:chemical synthesis*; D011719:Pyrazines / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D003049:Coccidiostats; D011719:Pyrazines; C028402:emimycin