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The search options are technical details. A source that can only be searched by full structure, can still be searched by text (chemical name, or identifier) because the Extended Search finds often the full structure if you enter a name or indentifier. 

Source Search options URL
  Text Full
SSS CAS # Other
Abblis- Research Chemicals & Building Blocks         www.abblis.com/
The Publications Division of the American Chemical Society provides the worldwide scientific community with a comprehensive collection of the most-cited, peer-reviewed journals in the chemical and related sciences.         pubs.acs.org/
AKosSamples is a database of approximate 15 million building blocks and screening compounds.  All samples are checked for identity and purity by NMR.  A network of suppliers can provide custom synthesis.         www.akosgmbh.de/AKosSamples
 Amadis Chemicalis a leading enterprises in medical and heal product research, development,manufacture and trading.         www.amadischem.com/
Angene Chemical provides uality chemicals for use in research and development and commercial manufacturing.         www.angenechemical.com/aboutus.html
Apexmol provides innovative chemical intermediates and chemistry services to the chemical R&D all over the world.         www.apexmol.com/
Aurum Chemicals - raw materials         www.aurumchemicals.pl/
BASE is one of the world's most voluminous search engines especially for academic open access web resources. BASE is operated by Bielefeld University Library.     www.base-search.net
Biological Magnetic Resonance Data Bank (BMRB) collects, annotates, archives, and disseminates (worldwide in the public domain) the important spectral and quantitative data derived from NMR spectroscopic investigations of biological macromolecules and metabolites. The goal is to empower scientists in their analysis of the structure, dynamics, and chemistry of biological systems and to support further development of the field of biomolecular NMR spectroscopy.     www.bmrb.wisc.edu/search/
 The Binding Database projects aims to make experimental data on the noncovalent association of molecules in solution searchable via the WWW. The initial focus is on biomolecular systems.       www.bindingdb.org/bind/index.jsp
BioMed Central is an STM (Science, Technology and Medicine) publisher which has pioneered the open access publishing model.         www.biomedcentral.com
BroadPharm offers a variety of high quality PEG linkers, pegylation reagents and heterocycle building blocks to the pharmaceutical and biotech industry worldwide.         www.broadpharm.com/
BuyersGuideChem is a directory of chemicals and chemical suppliers on the Internet.         www.buyersguidechem.de
Capot Chemical is a fine organics manufacturing facility which located in Hangzhou,P.R.China. We produce a wide range of organics, especially fluorine, boronic acids, amino acids, unnatural amino acids, peptide, cross linkers, organocatalysts, chiral building blocks, heterocyclic compounds and other active pharmaceutical ingredients compounds.         www.capotchem.com/index_en.htm
Chemical Entities of Biological Interest (ChEBI) is a freely available dictionary of molecular entities focusing on ‘small’ chemical compounds. www.ebi.ac.uk/chebi
CHEMBANK is an initiative for Chemical Genetics.  A freely available collection of data about small molecules (over 2000 compounds) and resources for studying their properties, especially their effects on biology.         chembank.broadinstitute.org
is a database of bioactive drug-like small molecules, it contains 2-D structures, calculated properties (e.g. logP, Molecular Weight, Lipinski Parameters, etc.) and abstracted bioactivities (e.g. binding constants, pharmacology and ADMET data).         https://www.ebi.ac.uk/chembldb
ChemBridge Corporation is a global provider of enabling chemistry products and contract research services for small molecule drug discovery.         www.chembridge.com/index.php
  is a search engine for high quality chemical properties.       chemeo.com
 ChemExper Chemical Directory is mainly a supplier database for chemicals, and displays physical and chemical characteristics, structure, MSDS and more.     www.chemexper.com
is a supplier database mainly for the Chinese market.       www.chemicalbook.com
will allow users to retrieve information for any of 25,496 hazardous chemicals or 'generic' entries based on a keyword search.       ull.chemistry.uakron.edu/erd
calculates predicted data related to each structure. You also can search Wikipedia by structure.       www.chemicalize.org/
Chemicalland21.com aims to be a resource of individual chemical information including technical data, safety data, and related compounds.       chemicalland21.com
allows users to search the NLM ChemIDplus database of over 370,000 chemicals.       chem.sis.nlm.nih.gov/chemidplus/
ChemMol - supplier database         http://chemmol.com

ChemSpider hosts the largest and most diverse online database of chemical structures sourced from over 150 different data sources.

  is a database of compounds with their synthesis references and physical properties.       www.chemsynthesis.com/
 is a registry of federally and privately supported clinical trials conducted in the United States and around the world.         clinicaltrials.gov/
ChEBI CiteXplore combines literature search with text mining tools for biology.         www.ebi.ac.uk/citexplore
integrates a chemical subset of the Medical Subject Headings (MeSH®), the hierarchical vocabulary from the U.S. National Library of Medicine.     ctd.mdibl.org/
Look up whether a structure occurs in many different databases, both public and commercial. Currently loaded pointers to: over 74 million entries from more than 100 databases, representing more than 46 million unique chemical structures.       cactus.nci.nih.gov/cgi-bin/lookup/search
DART Developmental and Reproductive Toxicology Database (DART)       http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?DARTETIC
The Directory of Open Access Journals (DOAJ) lists open access journals, that is, scientific and scholarly journals that meet high quality standards by exercising peer review or editorial quality control.         www.doaj.org
The DrugBank database is a unique bioinformatics and cheminformatics resource that combines detailed drug (i.e. chemical, pharmacological and pharmaceutical) data with comprehensive drug target (i.e. sequence, structure, and pathway) information.   www.drugbank.ca/
Distributed Structure-Searchable Toxicity (DSSTox) Database Network     www.epa.gov/ncct/dsstox/
The EBI Search engine, also known as EB-eye, is a scalable text search engine that provides easy and uniform access to the biological data resources hosted at the EMBL-EBI.         www.ebi.ac.uk/ebisearch
The European Chemicals Agency is an agency of the European Union which manages the technical, scientific and administrative aspects of the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) system. It is sited in Helsinki, Finland.       echa.europa.eu
eChemPortal offers access to physical chemical properties, environmental fate and behaviour, ecotoxicity, toxicity, GHS classifications       http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
Envirofacts contains chemical data from several different program system databases: the Aerometric Information Retrieval System, the Permit Compliance System, and the Toxics Release Inventory System.       http://www.epa.gov/enviro/
Find Suppliers and Information for over 8 Million Unique Chemicals!   www.emolecules.com/
Enamine Ltd. -World’s largest source of compounds for HTS: 1 770 000 products in stock         www.enamine.net/
US Environmental Protection Agency       www.epa.gov/
This data source searches the European Patent Office database via the ChEBI CiteXplore search engine.         www.epo.org
euSDB The euSDB database contains references to over 400'000 material-safety-data-sheets from different vendors / manufacturers. (Almost) all material-safety-data sheets are provided as links to the vendors or manufacturers source in order to guarantee state-of-the-art information.       www.eusdb.de/en
Exclusive Chemistry Ltd is a chemistry-based company specializing in the design and synthesis of organic compounds for the pharmaceutical, drug discovery, agrochemical and biotechnology industries.         www.exchemistry.com/
The FDA is responsible for protecting the public health by assuring the safety, efficacy, and security of human and veterinary drugs, biological products, medical devices, our nation’s food supply, cosmetics, and products that emit radiation.         www.fda.gov
Free patents online has hundreds of gigabytes of full-text data which is keyword searchable using the most powerful search engine in the industry.       www.freepatentsonline.com/
GENE-TOX (Genetic Toxicology Data Bank (GENE-TOX)       http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?GENETOX
Google     www.google.com
Google Books         http://books.google.com/
With Google Patent Search, you can now search the full text of the U.S. patent corpus and find patents that interest you.         www.google.com/patents
Google Scholar is a freely-accessible Web search engine that indexes the full text of scholarly literature across an array of publishing formats and disciplines. With Google Patent Search, you can now search the full text of the U.S. patent corpus and find patents that interest you.         scholar.google.de/
-Catalogue of the libraries of the university of Heidelberg       http://www.ub.uni-heidelberg.de/Englisch/helios/kataloge/heidi.html
The Human Metabolome Database (HMDB) contains detailed information about small molecule metabolites found in the human body.  DNA) sequences.         www.hmdb.ca
It is well known that university-based research is responsible for some of the world’s most profound discoveries, spurring breakthrough products and technologies that have markedly improved the way we live. A key to our nation’s long-term success and our ability to remain competitive in the global economy is ensuring that all of universities' promising research is given a chance to make it into practical use. Today, the iBridgeSM Network provides the centralized online source for research and innovations.         www.ibridgenetwork.org/
IPCS INCHEM is an invaluable tool for those concerned with chemical safety and the sound management of chemicals.         www.inchem.org/
IRIS (Integrated Risk Information System (IRIS)       toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?IRIS
IS Chemical Technology is an innovative chemical databases for commercial sourcing         www.ispharm.com/
ITER (International Toxicity Estimates for Risk (ITER)       http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?iter
KEGG COMPOUND is a chemical structure database for metabolic compounds and other chemical substances that are relevant to biological systems.         www.genome.jp/kegg/compound/
- the literature search engine of the university of Konstanz         http://www.ub.uni-konstanz.de/digitale-bibliothek/konsearch/
molport is a portal for suppliers of test substances         www.molport.com/buy-chemicals
MP Biomedicals, supplier catalogue of culture media, reagents, bovine proteins, antibodies, glassware and everything else that is used in a biological laboratory.     www.mpbio.com/
The NCI database contains 250,251 structures, which corresponds to the open part of the NCI database up until and including the latest release of the DTP cancer screen results of August 2000.     http://cactus.nci.nih.gov/ncidb2.2/
Nature Chemical Biology journal provides the full text of the current issue and an archive of previous issues from June 2005 to present         www.nature.com/nchembio/index.html
's integrated database contains publicly available data from a variety of sources, including GEO, caBIG, and Array Express among others.         www.nextbio.com
National Institute of Allergy and Infectious Diseases: This database contains compounds that have been tested against HIV, HIV enzymes or opportunistic pathogens.       chemdb2.niaid.nih.gov

NIST Chemistry WebBook provides access to data compiled and distributed by NIST under the Standard Reference Data Program.

is a biomedical search engine developed by bioalma for searching the published knowledge in biomedical literature.       www.novoseek.com 
Oakwood Chemical n- chemicals for research & development.         www.oakwoodchemical.com/
Open J-Gate is an electronic gateway to global journal literature in open access domain.       http://openj-gate.org/
archive contains information about experimentally-determined structures of proteins, nucleic acids, and complex assemblies.       www.pdb.org/pdb/home/home.do
PHARMAGATEWAYT has been created for the pharmaceutical sciences community to allow easy access to content jointly published by Springer and the American Association of Pharmaceutical Scientists.         www.pharmagateway.net
is a database of human genetic variations on drug response.         www.pharmgkb.org/
PLoS ONE (eISSN-1932-6203) is an international, peer-reviewed, open-access, online publication. PLoS ONE welcomes reports on primary research from any scientific discipline.         www.plosone.org/home.action
Proceedings of the National Academy of Sciences of the United States of America. PNAS Online contains the full text, figures, tables, equations, and references of all articles in PNAS dating back to 1990.         www.pnas.org/
provides information on the biological activities of small molecules. pubchem.ncbi.nlm.nih.gov/search/search.cgi
is a service of the U.S. National Library of Medicine that includes over 18 million citations from MEDLINE and other life science journals for biomedical articles back to 1948. PubMed includes links to full text articles and other related resources.     www.ncbi.nlm.nih.gov/pubmed/
PubMed Central (PMC) is a digital archive of life sciences journal literature that includes more than one million articles.     www.ncbi.nlm.nih.gov/pmc/

uses MEDLINE/PubMed(TM)as provided by the US National Library of Medicine (NLM) (see Terms) and full-text documents from BioMed Central and Open Access articles from PubMed Central. In addition, Quertle covers the NIH RePORTER database of grant applications and the National Library of Medicine's TOXLINE database of biochemical, pharmacological, physiological, and toxicological effects of drugs and other chemicals. Quertle also searches News (as reported by FierceMarkets Life Sciences and Health Care), scientific whitepapers and research posters submitted to Quertle.

Selleck Chemicals is one of the world leading suppliers of biochemical products and we commit ourselves to the highest products of signaling pathways such as MAPK and PI3K/Akt pathways, etc. We have over 1,000 products of inhibitors in addition to a variety of screening libraries.         www.selleckchem.com/
is a supplier in the research and fine chemicals market. Aldrich provides organic and inorganic chemicals, building blocks, reagents, advanced materials and stable isotopes for chemical synthesis, medicinal chemistry and materials science. Sigma is the Sigma-Aldrich's main biochemical supplier, with offerings including antibiotics, buffers, carbohydrates, enzymes, forensic tools, hematology and histology, nucleotides, proteins, peptides, amino acids and their derivatives.     www.sigmaaldrich.com/united-states.html
Scirus allows researchers to search for journal content, scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information.         www.scirus.com/
--SIRI MSDS Index— is maintained by Dan Woodard, MD dan@siri.org and Ralph Stuart, CIH. Our objective is to make critical safety information immediately and universally as accessible as possible.       hazard.com/msds/
Specs offers screening compounds, building blocks, fragments & natural products.         www.specs.net/snpage.php?snpageid=home
is making patent chemistry search faster, easier and more accessible.         www.surechem.org/
Toxin and Toxin Target Database (T3DB) is a unique bioinformatics resource that combines detailed toxin data with comprehensive toxin target information.       www.t3db.org
TimTec distributes synthetic organic and natural compounds, custom synthesis, scientific software and laboratory equipment.         www.timtec.net/
TOXLINE (Toxicology Literature Online (TOXLINE)       toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?TOXLINE
Chemical Carcinogenesis Research Information System (CCRIS) - Carcinogenicity and mutagenicity test results for over 8,000 chemicals.       toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?CCRIS
Hazardous Substances Data Bank (HSDB) - Comprehensive, peer-reviewed toxicology data for about 5,000 chemicals.        toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB
Fact Sheet:
UNC Library Express gets books from libraries worldwide         ncsu.worldcat.org
Vitas-M Laboratory provides chemical compounds for high-throughput screening and building bocks for combinatorial chemistry in drug discovery.         www.vitasmlab.com/
Wikipedia's articles provide links to guide the user to related pages with additional information. There are currently more than 5000 molecules indexed in Wikipedia.     www.wikipedia.org/
is a database of commercially-available compounds for virtual screening.         zinc.docking.org/