title: Mass spectral analysis of medicinal pyrazolidinediones.
mesh_terms: D003903:Deuterium; D013058:Mass Spectrometry; D010113:Oxyphenbutazone / Q000032:analysis; D010653:Phenylbutazone / Q000032:analysis; D011720:Pyrazoles / Q000032:analysis*; D013442:Sulfinpyrazone / Q000032:analysis
chemical_list: D011720:Pyrazoles; D003903:Deuterium; D010653:Phenylbutazone; D010113:Oxyphenbutazone; D013442:Sulfinpyrazone