Chemistry Chemical Reference Databases

• Directories of Commercial Chemicals@
• Organic Chemistry@

• Science: Reference 
• Science: Biology: Toxicology 

• ChemBioFinder  - Resource and database of chemistry and biology references for professional chemists and students.
• Chemexper  - Directory and searchable database for chemical names, molecular formulae, and CAS numbers.
• ChemFinder  - Database for chemical and chemical reaction information. Also a features search engine for chemical names, CAS numbers, and molecular formulas.
• CHEMnetBASE  - Portal to a wide range of chemical information for reference and research purposes.
• ChemSpider  - Free chemical database searchable by chemical name and chemical structure, offering access to more than 26 million structures collected from a multitude of data sources.
• DIPPR 801  - Design Institute for Physical Properties – a scientific project aims to provide information related to evaluated standard thermophysical property values.
• Elsevier MDL  - Resource for research, innovation, and development in the field of discovery informatics.
• InfoChem GmbH  - Features products and services specially developed for the chemoinformatics industry.
• The Nanogen Index  - Index of information related to pesticides and other environmental contaminants.
• Organic Syntheses  - Provides an annual compilation of procedures related to the synthesis of organic compounds.
• PubChem  - Knowledge base sponsored by the National Library of Medicine. Provides information on the biological activities of small molecules.
• Reciprocal Net  - Open, freely distributable, and extensible digital collection of molecular structures information.
• Specs  - Offers the drug discovery industry with important chemistry and chemistry-related information and services.
• SyntheticPages  - Free and interactive database providing information and procedures related to synthetic chemistry.