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Chemical Formula Search

webbook.nist.gov/chemistry/form-ser.html

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):

Compound Name Formula Search -- EndMemo

www.endmemo.com/chem/chemsearch.php

Chemical Compounds Lookup by Name or Formula.

Chemical Structure Search - PubChem

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

PubChem Structure Search. ... Search By: Name/ Text, Identity/ Similarity, Substructure/ Superstructure, Molecular Formula, 3D Conformer, Saved Search ...

ChemSpider | Search and share chemistry

www.chemspider.com/

Free chemistry search engine which aggregates and indexes chemical structures and their associated information into a single searchable repository.

Chemical Search - Organic Chemistry Portal

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: ...

Chemical Identifier Search - ChemSpider

www.chemspider.com/Search.aspx

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

Chemical Structure Search - ChemSpider

www.chemspider.com/StructureSearch.aspx

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

Compound Search: Home

www.compoundsearch.com/

Compound Search: Free Wiley spectral library chemical compound search ... chemical name, InChI, InChI key, nominal mass, or molecular formula (Hill order)  ...

Substructure Search - Sigma-Aldrich

www.sigmaaldrich.com/catalog/search/substructure/SubstructureSearchPage

Search Type. Substructure, Identity. Exact, Fragment. Similarity %. Search Options. Stereo. Tautomer. Total Hits. 50, 100, 200, 300, 500. Help. Clear. Search  ...

eMolecules

www.emolecules.com/

Free chemical structure search engine with millions of public domain structures from vendors worldwide.