title: Collaborative study of a chromatographic method for sodium diphenylhydantoin in capsules.
mesh_terms: D002214:Capsules / Q000032:analysis; D002845:Chromatography; D005069:Evaluation Studies as Topic; D008722:Methods; D010672:Phenytoin / Q000032:analysis*; D011786:Quality Control; D012964:Sodium / Q000032:analysis
chemical_list: D002214:Capsules; D010672:Phenytoin; D012964:Sodium