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Chemical formula

en.wikipedia.org/wiki/Chemical_formula

A chemical formula is a way of expressing information about the proportions of atoms that .... elements, including hydrogen, are ordered alphabetically. This deterministic system enables straightfor...

Chemical Formula Search

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

Search for Species Data by Chemical Formula ... Enter the desired chemical formula (e.g., C4H*Cl): ... Allow more atoms of elements in formula than specified.

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.

eMolecules

www.emolecules.com/

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

STN Easy Quick Tips - Chemical Formula Search

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.

ChemExper Chemical Directory

www.chemexper.com/

ChemExper is a company joining together the areas of chemistry, computer ... is a free service that allows to find a chemical by its molecular formula, IUPAC name, ... Inc. – Search 11428926 different products from 2516 chemicals suppliers.

Substructure Search - Sigma-Aldrich

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

Search Options. Stereo ... Help. Clear. Search ... IDRANAL, SPECTRANAL, and VOLPAC are trademarks of Honeywell Specialty Chemicals Seelze GmbH.

Sophisticated chemical formula search - ChemAxon - DOCS

docs.chemaxon.com/display/jchembase/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, ...

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)  ...

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Compound Name Formula Search -- EndMemo

www.endmemo.com

Chemical Compounds Lookup by Name or Formula.

Chemical Search - Organic Chemistry Portal

www.organic-chemistry.org

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

Chemical Search - Organic Chemistry Portal

www.organic-chemistry.org

Please click here to perform a new search: New Chemical Search. Search ... Find chemicals and suppliers by name, molecular formula or cas number: ...