#methane_series__alkane_series__alkane__paraffin  a non-aromatic saturated hydrocarbon with the general formula CnH(2n+2)
  supertype:  aliphatic_compound__aliphaticcompound  organic compound that is an alkane or alkene or alkyne or their derivative
  subtype:  amine__aminoalkane  a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals
     subtype:  histamine  amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the humane immune system during allergic reactions
     subtype:  aniline_oil__anilineoil__aniline__aminobenzine__phenylamine  oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines
     subtype:  enamine  an amine containing the double bond linkage -C=C-N-
     subtype:  monoamine  a molecule containing one amine group (especially one that is a neurotransmitter)
        subtype:  monoamine_neurotransmitter__monoamineneurotransmitter  a monoamine that is functionally important in neural transmission
           subtype:  noradrenaline  a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
           subtype:  serotonin__5-hydroxytryptamine__5hydroxytryptamine  a neurotransmitter involved in e.g. sleep and depression and memory
           subtype:  dopamine__Dopastat__Intropin  a monoamine neurotransmitter found in the brain and essential for the normal functioning of the central nervous system; as a drug (trade names Dopastat and Intropin) it is used to treat shock and hypotension
     subtype:  ptomaine__ptomain  any of various amines (such as putrescine or cadaverine) formed by the action of putrefactive bacteria
        subtype:  putrescine  a colorless crystalline ptomaine with a foul odor that is produced in decaying animal matter
        subtype:  cadaverine  a colorless toxic ptomaine with an unpleasant odor formed during the putrefaction of animal tissue
  subtype:  heptane  a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings
  subtype:  hexane  a colorless flammable liquid alkane derived from petroleum and used as a solvent
  subtype:  methane  a colorless odorless gas used as a fuel
     subtype:  marsh_gas__marshga  methane gas produced when vegetation decomposes in water

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