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The Merck Index* Online offers highly authoritative information on chemicals, drugs and biologicals in an easy-to-use online database. Search for compounds, chemical and physical properties, and key references or browse different therapeutic categories. This is a highly curated reference source written by trained scientists.
For marine natural products research provides a database of compounds, articles, chemical data and dereplication tools. Search bibliographic references for papers, or use exact mass, UV and NMR spectroscopic data to find known compounds. This is a comprehensive and unique resource for marine natural product scientists.
Search hundreds of sources of chemical information on the web through one database: . This free tool allows you to search over 115 million chemical structures and over 250 data sources through one easy-to-use interface. Explore different online resources through ChemSpider, curate the information you find, or add your own data anywhere, anytime.
Additionally, exclusive resources are available for members including access to third-party databases and encyclopaedic chemical information sources through our Virtual Library.
*The name THE MERCK INDEX is owned by Merck & Co., Inc., Rahway, NJ, USA and its affiliates, and is licensed to The 91AV for use in the USA and Canada. Membership of the Royal Society Of 91AV does not grant access to THE MERCK INDEX Online.