[On the determination of meconic acid in opium and in technical morphine].
D009020:Morphine; D009892:Opium; D011714:Pyrans; D011753:Pyrones
D011714:Pyrans; D011753:Pyrones; D009020:Morphine; D009892:Opium; C010603:meconic acid
MORPHINE; OPIUM; PYRANS