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chemical database small molecules "ChemDB". 5,000,000 ChemExper Chemexper Chemical Directory catalogue chemicals CASno Structure SMILES "ChemExper". Chemxpert Database Chemxpert Chemical Database small molecules database buyers,suppliers "ChemxpertDB". 10,00000 Chemical Book East West University: commercially available compounds
Organic Compounds Database Free compound search by structure; Chemical catalog Compounds, analytical data; Chmoogle The free chemistry search engine; PubChem Compound, substance, and bioactivity data; NCI Database Compound, substance, and bioactivity data, advanced search panel; NIST Chemistry WebBook Compound data and spectra
For example, a chemical database might store a molecule with stereochemistry unspecified, whereas a chemical registry system requires the registrar to specify whether the stereo configuration is unknown, a specific (known) mixture, or racemic. Each of these would be considered a different record in a chemical registry system.
This is a list of CAS numbers by chemical formulas and chemical compounds, indexed by formula.The CAS number is a unique number applied to a specific chemical by the Chemical Abstracts Service (CAS).This list complements alternative listings to be found at list of inorganic compounds and glossary of chemical formulae
NIST created this software for GC/MS data in various formats. It deconvolutes coeluting mass spectra, displays mass chromatograms, calculates retention indexes, allows for target compound libraries, and will export spectra to the NISMS Mass Spectral Search Program.
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List of biomolecules; List of inorganic compounds; List of organic compounds; Template:Chembox, Template:Infobox drug (aka {{Drugbox}}) Wikipedia:Chemical infobox (data page) Wikipedia:WikiProject Chemicals, and its current worklist
Chemical nomenclature, replete as it is with compounds with very complex names, is a repository for some names that may be considered unusual. A browse through the Physical Constants of Organic Compounds in the CRC Handbook of Chemistry and Physics (a fundamental resource) will reveal not just the whimsical work of chemists, but the sometimes peculiar compound names that occur as the ...