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  1. ChemIndustry.com – https://www.chemindustry.com/
  2. ChemSpider – http://www.chemspider.com/
  3. ChemExper – https://www.chemexper.com/
  4. Sigma-Aldrich – https://www.sigmaaldrich.com/
  5. PubChem – https://pubchem.ncbi.nlm.nih.gov/
  6. Chemsrc – https://www.chemsrc.com/
  7. ChemIDplus – https://chem.nlm.nih.gov/chemidplus/
  8. ChEBI – https://www.ebi.ac.uk/chebi/
  9. Chemical Safety Library – https://www.chemicalsafetylibrary.com/
  10. Chemical Land – https://www.chemicalland21.com/
  11. ChemistryViews – https://www.chemistryviews.org/
  12. Organic Chemistry Portal – https://www.organic-chemistry.org/
  13. NIST Chemistry WebBook – https://webbook.nist.gov/chemistry/
  14. ChemiDay – https://www.chemiday.com/
  15. Chemie.DE – https://www.chemie.de/
  16. Chemblink – https://www.chemblink.com/
  17. Chemical Safety Facts – https://www.chemicalsafetyfacts.org/
  18. Royal Society of Chemistry – https://www.rsc.org/
  19. ChemiCool – https://www.chemicool.com/
  20. ChemiCal Pro – https://www.chemicalpro.com/

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