Chemistry Associations and Societies
- American Chemical Society
- American Institute of Physics
- American Physical Society
- Chemical Abstracts Service
- Chemical Consultants Network
- Chemical Heritage Foundation
- International Union of Crystallography
- International Union of Pure and Applied Chemistry
- Institute of Physics
- Materials Research Society
- National Academies
- National Science Foundation
- Nobel Foundation
- Public Library of Science
- Royal Society of Chemistry
- Science.gov
- SPIE - International Society for Optical Engineering
- tetrahedron.info