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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 D03 Heterocyclic Compounds D006571 +
 D03.549 Heterocyclic Compounds with 4 or More Rings D006576 +
 D03.549.686 Morphinans D009019 +
 D03.549.686.165 Butorphanol D002077