Search by Chemical Structure
The following tools allow you to draw a structural formula and search for known compounds with similar structures:
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EMoleculesFind Suppliers and Information for over 8 Million Unique Chemicals.
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ChemSpider - Structure SearchEasy to use. Draw structures and search by similarity. Provides physical properties, Chemical ID numbers, and relevant literature of results.
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SciFinder This link opens in a new window
Search Chemical Abstracts. Also access CAS Registry of 20M+ substances and Medline.
You must register for SciFinder before you can use it.
Search for Chemical Structure
The following databases provide structural formula:
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PubChemThree linked databases within the National Center for Biotechnology Information Entrez information retrieval system. You can search these databases by names, synonyms, keywords: PubChem Substance; PubChem Compound; PubChem BioAssay.
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ChemSpiderChemSpider is a free access service providing a structure centric community for chemists. Providing access to millions of chemical structures and integration to a multitude of other online services ChemSpider is the richest single source of structure-based chemistry information.
