A possible route to the location of the nitrogen atom in morphine; the synthesis of 3.4-dimethoxy-9-methylphenanthrene.
D007554:Isotopes; D009020:Morphine; D009584:Nitrogen; D010616:Phenanthrenes
D007554:Isotopes; D010616:Phenanthrenes; C031181:phenanthrene; D009020:Morphine; D009584:Nitrogen
MORPHINE; PHENANTHRENE