title: On conformation analysis, molecular graphics, fentanyl and its derivatives.
mesh_terms: D003196:Computer Graphics; D003461:Crystallography; D005283:Fentanyl / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D006801:Humans; D008968:Molecular Conformation; D011955:Receptors, Drug / Q000378:metabolism; D013329:Structure-Activity Relationship; D013816:Thermodynamics
chemical_list: D011955:Receptors, Drug; D005283:Fentanyl