barbituric acid molecular structure, 3d model molecule, malonylurea, structural chemical formula view from a microscope

barbituric acid malonylurea 6hydroxyuracil molecule microscope transparent molecular structure chemical formula model bubble air glass atom c4h4n2o3 oxygen carbon hydrogen chemistry science organic atomic medicine skeletal structural compound biochemistry barbiturate sedative drug riboflavin sedation biology carboxylic education composition nervous physical scientific depressant basic treatment view from microscope