1. Sources
  2. OECD International Trade
  3. International Trade By Commodity Statistics (SITC Rev. 3)
  4. 5: Chemicals and related products, n.e.s.
  5. 51: Organic chemicals
  6. 515: Organo-inorganic, heterocycl. compounds, nucl. acids
  7. 5157: Other heterocyclic compounds; nucleic acids
  8. 51576: Heteroc. comp., nitrogen hetero-atom, pyrim. or pip.

51576: Heteroc. comp., nitrogen hetero-atom, pyrim. or pip.

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