Chemistry: Physical Data

The Comprehensive Enzyme Information System that brings together enzyme data from authoritative sources. Hosted by the Technical University of Braunschweig, Institute of Biochemistry and Bioinformatics.

A free database supported by the Royal Society of Chemistry (UK). Provides structure information and physical data of compounds described in RSC journals.

An encyclopedia of chemicals, drugs, and biological compounds. Located in SciTech Reference at RS51. M4.

Provides users with easy access to chemical and physical property data for chemical species. Compiled and distributed by NIST (National Institute of Standards and Technology) under the Standard Reference Data Program.

A free online version of a venerable series providing information about many organic syntheses. Searchable by compound or by citation. If you prefer reading this in book form we have volumes in SciTech Reference at QD262 .072.

A free database supported by the National Library of Medicine, part of the Entrez system of NCBI. Provides structure searching, links to the literature, and physical data. You can run your search against PubChem Substance to do a structure search or PubChem Compound to search using keywords.

ChemIDplus gives you access to structure and nomenclature authority files used to identify chemical substances cited in the National Library of Medicine® (NLM) databases. You can also find structure searching and links to other biomedical resources at NLM and on the Internet. It contains more than 420,000 chemical records, including 3D structure models for more than 335,000 chemicals and 645,000 variations