#aliphatic_compound__aliphaticcompound  organic compound that is an alkane or alkene or alkyne or their derivative
  supertype:  #organic_compound__organiccompound  any compound of carbon and another element or a radical
  subtype:  #acetylene__ethyne__alkyne  a colorless flammable gas used chiefly in welding and in organic synthesis
  subtype:  #alicyclic_compound__alicycliccompound  an aliphatic compound that contains a ring of atoms
  subtype:  #alkene__olefine__olefin  any unsaturated aliphatic hydrocarbon
     subtype:  #ethylene__ethene  a flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic
  subtype:  #methane_series__alkane_series__alkane__paraffin  a non-aromatic saturated hydrocarbon with the general formula CnH(2n+2)
     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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