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ChemExper is a company joining together the areas of chemistry, computer science and telecommunication. The ChemExper Chemical Directory is a free service that allows to find a chemical by its molecular formula, IUPAC name, common name, CAS number, c...

ChemIndustry.com is the search engine of the chemical world. The best place for chemists and chemical industry professionals to find chemicals, equipment, services and chemical resources.

A freely accessible database of chemicals with synthesis references and physical properties

Buyers Guide for Chemicals is a directory of chemicals, chemical suppliers and producers. More than 310,000 products, 860,000 supply sources and 5,122 company addresses.

Complete Patent Searching Database and Patent Data Analytics Services.

Free chemical structure search engine. Millions of public domain structures. Very fast substructure searching. Results link to data about these structures.

Look Chemical for Chemicals is a directory of chemicals, chemical suppliers and producers. More than 30,000,000 products, 350,000 supply sources and 8,000 company addresses. Search for free and find new suppliers for chemical products, pharmaceutical...

Acer Amino is a wholesale distributor of chemical reagents including amino,alpha amino acid,aliphatic amino acids,ect.

NIST site provides chemical and physical property data on over 40,000 compounds.