3d image of barbituric acid skeletal formula

barbituric acid malonylurea 6-hydroxyuracil pyrimidine heterocyclic pyrimidinetriol pyrimidinetrione trihydroxypyrimidine trioxohexahydropyrimidine hydroxyuracil hydroxy-hydrouracil barbiturate drug synthesis knoevenagel condensation minoxidil phenobarbital central nervous system depressant depression withdrawal syndrome derivative controlled substances addict addiction anxiolytics hypnotics anticonvulsant anesthesia tolerance dependence delirium tremens benzodiazepine withdrawal bioaccumulation preparation mount treatment medicine medicament remedy cure medication side effect adverse action iatrogenic overdose contraindications 3d