Reactions Systems Chemical Abstracts Service

Artificial Intelligence in Chemistry Chemical Abstracts Service Information System Graph Theory in Chemistry Nomenclature Automatic Generation and Conversion Quantitative Structure-Activity Relationships in Drug Design Reaction Databases Ring Perception Stereochemistry ... 

Chemical Abstracts Service Information System Chemical Engineering Databases Chemical Safety Information Databases Factual Information Databases Inorganic Chemistry Databases Internet Internet-based Computational Chemistry Tools Online Databases in Chemistry Reaction Databases Structure Databases. 

Chemical Abstracts Service Information System Computer Graphics and Molecular Modeling Electronic Publishing of Scientific Manuscripts Factual Information Databases Internet-based Computational Chemistry Tools Molecular Models Visualization Nucleic Acids Qualitative Modeling Online Databases in Chemistry Protein Data Bank (PDB) A Database of 3D Structural Information of Biological Macromolecules Reaction Databases Spectroscopic Databases Structure Databases. 

Chemical Abstracts Service Information System Combinatorial Chemistry Computer Graphics and Molecular Modeling Factual Information Databases Online Databases in Chemistry Reaction Classification Stereochemistry Representation and Manipulation Structural Similarity Measures for Database Searching Structure and Substructure Searching Structure Representation Synthesis Design. 

Bob Dana and colleagues at Chemical Abstracts Service presented a poster on the machine generation of multi-step reactions for the CASREACT system on STN International. The online version of FIZ s Cheminform database will be available on STN International also. Alex Parlow gave a poster presentation on the creation of Cheminform both as an electronic database (for onhne and in-house use) and as a printed product. 

The first commercial computer system to store, search and retrieve reaction schemes was ChemBase (see Figure 1). ChemBase could represent and display linear schemes, but was limited in its ability to perform scheme-oriented structure searches (see below). The Chemical Abstracts Service (CAS) has announced the availability of their reaction file (CASREACT)," organised with reaction schemes in mind. Although at present the scheme searching capabilities available at the user interface are limited, CASREACT appears to represent schemes in a more rigorous manner internally, allowing further user interface refinements in the future. 

Chemical Reactions Documentation Service which also includes abstracts from patents and provides the data coded on magnetic tape and punched cards as additional retrieval tools. All the abstracts in Vol. 1-30, Synthetic Methods, have been coded according to the same system, and the respective tapes or punched cards are also available from Derwent Publications. 

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