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webbook.nist.gov/chemistry/form-ser

Search for Species Data by Chemical Formula. Please follow the steps below to conduct your search (Help): Enter the desired chemical formula (e.g., C4H*Cl):

www.endmemo.com/chem/chemsearch.php

Chemical Compounds Lookup by Name or Formula.

pubchem.ncbi.nlm.nih.gov/search/search.cgi

PubChem Structure Search. ... Advanced search · Help. Try the new PubChem Search. ... Superstructure, Molecular Formula, 3D Conformer, Saved Search ...

www.organic-chemistry.org/chemicals/search.htm

Organic Chemistry Portal · Chemicals >> Quick Search, Structure Search. Chemical Search Engine. Enter a name, molecular formula or cas number: ...

www.chemspider.com/StructureSearch.aspx

Search by Structure or Substructure. Upload a structure file or draw using a molecule editor.

www.chemspider.com

ChemSpider is a free chemical structure database providing fast access to over 34 million structures, properties and associated information.

www.chemspider.com/Search.aspx

Search by Systematic name, Synonym, Trade name, Registry number, SMILES or InChI.

www.cas.org/training/stneasytips/subinforformula.html

Introduction. This section describes how to use the Advanced Search option in STN Easy to find chemical substance information using a chemical formula.

www.lenntech.com/periodic/symbol/symbol.htm

The elements of the periodic table sorted by symbol. click on any element's name for further chemical properties, environmental data or health effects. This list ...

docs.chemaxon.com/display/docs/Sophisticated+chemical+formula+search

Feb 19, 2015 ... JChem Base offers sophisticated chemical formula search for easier usage and better performance. Besides simple chemical formula search, ...