#chemical_chain__chain  a series of linked atoms (generally in an organic molecule)
  supertype:  #building_block__unit  a single undivided natural entity occurring in the composition of something else; "units of nucleic acids"
  part of:  #molecule
  subtype:  #closed_chain__ring  (chemistry) a chain of atoms in a molecule that forms a closed loop
  subtype:  #open_chain  a chain of atoms in a molecule whose ends are not joined to form a ring
     subtype:  #branched_chain  an open chain of atoms with one or more side chains attached to it
     subtype:  #straight_chain  an open chain of atoms with no side chains

No statement uses or specializes #chemical_chain; click here to add one.