Lewis, R J Formation of an interfering substance, 3,4-dimethyl-5-phenyl-1,3-oxazolidine, during a pseudoephedrine urinalysis. [electronic resource] - Journal of forensic sciences Jul 2000 - 898-901 p. digital Publication Type: Journal Article ISSN: 0022-1198 Subjects--Topical Terms: Accidents, AviationArtifactsAutopsyEphedrine--urineForensic Medicine--methodsHumansOxazoles--chemistryReproducibility of Results