title: Infrared identification of barbiturates with particular reference to the occurrence of polymorphism.
mesh_terms: D000654:Amobarbital; D001463:Barbiturates; D003461:Crystallography; D007259:Infrared Rays; D008723:Methohexital; D010424:Pentobarbital; D010634:Phenobarbital; D012631:Secobarbital; D013057:Spectrum Analysis; D013874:Thiopental
chemical_list: D001463:Barbiturates; D012631:Secobarbital; D008723:Methohexital; D000654:Amobarbital; D010424:Pentobarbital; D013874:Thiopental; D010634:Phenobarbital