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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 CASno, suppliers, properties "Chemical Book". 200,000 Chemical Register
There have been several studies of the scale and complexity of this market for example in the USA. [ 1 ] [ 2 ] Commodity chemicals are a sub-sector of the chemical industry (other sub sectors are fine chemicals , specialty chemicals , inorganic chemicals , petrochemicals , pharmaceuticals , renewable energy (e.g. biofuels ) and materials (e.g ...
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FREE Resources: 3 articles every 2 weeks (Register and Read Program, archived journals). Also, early journals (prior to 1923 in US, 1870 elsewhere) free, no registry necessary. Free and Subscription JSTOR [89] Jurn: Multidisciplinary Jurn is a free-to-use online search tool for finding and downloading free full-text scholarly works.
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.
Chemical substance – Form of matter; List of alchemical substances; List of chemical elements; List of minerals – List of minerals with Wikipedia articles; List of named alloys; List of straight-chain alkanes; Polyatomic ion – Ion containing two or more atoms; Exotic molecule – a compound containing one or more exotic atoms
Name Description License Refs deviantART: image artwork sharing website: various (15 million CC licensed) [46] Flickr: user photo uploading and sharing service: various CC licenses (350 million CC images of 6+ billion images [47] [48]) Mapillary: Over 30 million free photos: CC BY-SA: Metropolitan Museum of Art: paintings and artworks: CC0 (375 ...