Organic Compounds Database
Search the database by melting point, boiling point, index of refraction, molecular weight, formula, UV absorption wavelengths, mass spectral peaks, and/or chemical types.

ChemKey Search
Organic synthetic method database with thousands of references. Free demo and ordering information available.

MDL Information Systems GmbH
Official homepage of the database provider. Contains client software, manuals and links relevant to the CrossFire database.

Abbreviations of Chemical Compounds
Searchable database.

Physiochemical Properties of Popular Liquids
Physical properties of over seventy popular solvents and liquids. Sort in ascending or descending order of the desired criteria.

Ecdybase (The Ecdysone Handbook)
A free online ecdysteroids database. Includes ecdysteroid containing products catalogue.

Enzyme Nomenclature Database (ExPASy)
A repository of information relative to the nomenclature of enzymes.