Ψ
 Medical Concepts
  Chemicals and Drugs
 Heterocyclic Compounds
 Heterocyclic Compounds with 4 or More Rings
 Aporphines
 Benzophenanthridines
 Berberine Alkaloids
 Cevanes
 Dihydro-beta-Erythroidine
 Ergolines
 Bromocriptine
 Ergonovine
 Lisuride
 Lysergic Acid
 Metergoline
 Methysergide
 Nicergoline
 Pergolide
 Ergotamines
 Harringtonines
 Morphinans
 Pterocarpans
 Rifamycins
 Rotenone
 Tetrapyrroles

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