Information about Chemistry specific online resources that are Open Access so available to all researchers and subject chemistry online resources that are freely available to researchers in developing and emerging countries.

ABC Chemistry

This is a directory of permanently available journals covering chemistry or chemistry-related subjects. The directory only includes content where there is at least one-year of free full-text article access, or extensive free supplements to printed versions of papers. Whilst most material is available in English-language only, some material is available in Spanish, Portuguese and Russian.

Chemistry Central

Chemistry Central,operated by BioMed Central and owned by Springer Science+Business Media,  publishes high-quality peer-reviewed open access research in chemistry.All original research articles published by, or in co-operation with, Chemistry Central are made freely and permanently accessible online immediately upon publication.


ChemSpider is a chemical structures database, aggregating and indexing chemical structures and their associated information into a single searchable repository (whether from open access or commercial databases). It allows users to either access the data immediately via open access links or have the information necessary to continue their searches into commercially available systems.


ChemSynthesis is a freely accessible database of chemicals. This website contains substances with their synthesis references and physical properties such as melting point, boiling point and density. There are currently more than 40,000 compounds and more than 45,000 synthesis references in the database and the database is updated periodically.

Crystallography Online

The datasets associated with journals published by the Union of Crystallography (IUCr) can be accessed free of charge from its website. Through Crystallography Online IUCr aims to provide extensive coverage of current and internet-based information concerning crystallography and of interest to crystallographers. This includes access to over 50 wide ranging specialist subject databases.

A cluster of databases on toxicology, hazardous chemicals, and related areas with free to access abstracts plus links to a range of related NLM sites.

WWW Chemistry Guide

Comprehensive and evaluated guide to web sites related to chemistry and the chemical industry. Its mission consists in collecting and independently annotating all useful chemistry sites.